十个超级有用的PHP代码片段

<p>1. 发送短信</p>
<p>调用 <a rel="nofollow" href="http://www.textmagic.com/" target="_blank">TextMagic</a>
API。</p>
<div id="highlighter_720407" class="syntaxhighlighter  ">
<div class="lines">
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>01</code>
</td>
<td class="content">
<code class="comments">// Include the TextMagic PHP lib</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>02</code>
</td>
<td class="content">
<code class="keyword">require</code>
<code class="plain">(</code>
<code class="string">'textmagic-sms-api-php/TextMagicAPI.php'</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>03</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>04</code>
</td>
<td class="content">
<code class="comments">// Set the username and password information</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>05</code>
</td>
<td class="content">
<code class="variable">$username</code>
<code class="plain">= </code>
<code class="string">'myusername'</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>06</code>
</td>
<td class="content">
<code class="variable">$password</code>
<code class="plain">= </code>
<code class="string">'mypassword'</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>07</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>08</code>
</td>
<td class="content">
<code class="comments">// Create a new instance of TM</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>09</code>
</td>
<td class="content">
<code class="variable">$router</code>
<code class="plain">= </code>
<code class="keyword">new</code>
<code class="plain">TextMagicAPI(</code>
<code class="keyword">array</code>
<code class="plain">(</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>10</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="string">'username'</code>
<code class="plain">=&gt; </code>
<code class="variable">$username</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>11</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="string">'password'</code>
<code class="plain">=&gt; </code>
<code class="variable">$password</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>12</code>
</td>
<td class="content">
<code class="plain">));</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>13</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>14</code>
</td>
<td class="content">
<code class="comments">// Send a text message to '999-123-4567'</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>15</code>
</td>
<td class="content">
<code class="variable">$result</code>
<code class="plain">= </code>
<code class="variable">$router</code>
<code class="plain">-&gt;send(</code>
<code class="string">'Wake up!'</code>
<code class="plain">, </code>
<code class="keyword">array</code>
<code class="plain">(9991234567), true);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>16</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>17</code>
</td>
<td class="content">
<code class="comments">//
result:  Result is: Array ( [messages] =&gt; Array ( [19896128] =&gt;
9991234567 ) [sent_text] =&gt; Wake up! [parts_count] =&gt; 1 )</code>
</td>
</tr></tbody></table>
</div>
</div>
</div>
<p> <span style="font-weight: bold;">2. 根据IP查找地址</span>
</p>
<div id="highlighter_725365" class="syntaxhighlighter  ">
<div class="lines">
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>01</code>
</td>
<td class="content">
<code class="keyword">function</code>
<code class="plain">detect_city(</code>
<code class="variable">$ip</code>
<code class="plain">) {</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>02</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>03</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="variable">$default</code>
<code class="plain">= </code>
<code class="string">'UNKNOWN'</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>04</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>05</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="keyword">if</code>
<code class="plain">(!</code>
<code class="functions">is_string</code>
<code class="plain">(</code>
<code class="variable">$ip</code>
<code class="plain">) || </code>
<code class="functions">strlen</code>
<code class="plain">(</code>
<code class="variable">$ip</code>
<code class="plain">) &lt; 1 || </code>
<code class="variable">$ip</code>
<code class="plain">== </code>
<code class="string">'127.0.0.1'</code>
<code class="plain">|| </code>
<code class="variable">$ip</code>
<code class="plain">== </code>
<code class="string">'localhost'</code>
<code class="plain">)</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>06</code>
</td>
<td class="content">
<code class="spaces">            </code>
<code class="variable">$ip</code>
<code class="plain">= </code>
<code class="string">'8.8.8.8'</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>07</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>08</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="variable">$curlopt_useragent</code>
<code class="plain">= </code>
<code class="string">'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)'</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>09</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>10</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="variable">$url</code>
<code class="plain">= </code>
<code class="string">'http://ipinfodb.com/ip_locator.php?ip='</code>
<code class="plain">. urlencode(</code>
<code class="variable">$ip</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>11</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="variable">$ch</code>
<code class="plain">= curl_init();</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>12</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>13</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="variable">$curl_opt</code>
<code class="plain">= </code>
<code class="keyword">array</code>
<code class="plain">(</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>14</code>
</td>
<td class="content">
<code class="spaces">            </code>
<code class="plain">CURLOPT_FOLLOWLOCATION  =&gt; 1,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>15</code>
</td>
<td class="content">
<code class="spaces">            </code>
<code class="plain">CURLOPT_HEADER      =&gt; 0,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>16</code>
</td>
<td class="content">
<code class="spaces">            </code>
<code class="plain">CURLOPT_RETURNTRANSFER  =&gt; 1,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>17</code>
</td>
<td class="content">
<code class="spaces">            </code>
<code class="plain">CURLOPT_USERAGENT   =&gt; </code>
<code class="variable">$curlopt_useragent</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>18</code>
</td>
<td class="content">
<code class="spaces">            </code>
<code class="plain">CURLOPT_URL       =&gt; </code>
<code class="variable">$url</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>19</code>
</td>
<td class="content">
<code class="spaces">            </code>
<code class="plain">CURLOPT_TIMEOUT         =&gt; 1,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>20</code>
</td>
<td class="content">
<code class="spaces">            </code>
<code class="plain">CURLOPT_REFERER         =&gt; </code>
<code class="string">'http://'</code>
<code class="plain">. </code>
<code class="variable">$_SERVER</code>
<code class="plain">[</code>
<code class="string">'HTTP_HOST'</code>
<code class="plain">],</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>21</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>22</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>23</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="plain">curl_setopt_array(</code>
<code class="variable">$ch</code>
<code class="plain">, </code>
<code class="variable">$curl_opt</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>24</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>25</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="variable">$content</code>
<code class="plain">= curl_exec(</code>
<code class="variable">$ch</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>26</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>27</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="keyword">if</code>
<code class="plain">(!</code>
<code class="functions">is_null</code>
<code class="plain">(</code>
<code class="variable">$curl_info</code>
<code class="plain">)) {</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>28</code>
</td>
<td class="content">
<code class="spaces">            </code>
<code class="variable">$curl_info</code>
<code class="plain">= curl_getinfo(</code>
<code class="variable">$ch</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>29</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>30</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>31</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="plain">curl_close(</code>
<code class="variable">$ch</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>32</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>33</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="keyword">if</code>
<code class="plain">( preg_match(</code>
<code class="string">'{&lt;li&gt;City : ([^&lt;]*)&lt;/li&gt;}i'</code>
<code class="plain">, </code>
<code class="variable">$content</code>
<code class="plain">, </code>
<code class="variable">$regs</code>
<code class="plain">) )  {</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>34</code>
</td>
<td class="content">
<code class="spaces">            </code>
<code class="variable">$city</code>
<code class="plain">= </code>
<code class="variable">$regs</code>
<code class="plain">[1];</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>35</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>36</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="keyword">if</code>
<code class="plain">( preg_match(</code>
<code class="string">'{&lt;li&gt;State/Province : ([^&lt;]*)&lt;/li&gt;}i'</code>
<code class="plain">, </code>
<code class="variable">$content</code>
<code class="plain">, </code>
<code class="variable">$regs</code>
<code class="plain">) )  {</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>37</code>
</td>
<td class="content">
<code class="spaces">            </code>
<code class="variable">$state</code>
<code class="plain">= </code>
<code class="variable">$regs</code>
<code class="plain">[1];</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>38</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>39</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>40</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="keyword">if</code>
<code class="plain">( </code>
<code class="variable">$city</code>
<code class="plain">!=</code>
<code class="string">''</code>
<code class="plain">&amp;&amp; </code>
<code class="variable">$state</code>
<code class="plain">!=</code>
<code class="string">''</code>
<code class="plain">){</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>41</code>
</td>
<td class="content">
<code class="spaces">          </code>
<code class="variable">$location</code>
<code class="plain">= </code>
<code class="variable">$city</code>
<code class="plain">. </code>
<code class="string">', '</code>
<code class="plain">. </code>
<code class="variable">$state</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>42</code>
</td>
<td class="content">
<code class="spaces">          </code>
<code class="keyword">return</code>
<code class="variable">$location</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>43</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="plain">}</code>
<code class="keyword">else</code>
<code class="plain">{</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>44</code>
</td>
<td class="content">
<code class="spaces">          </code>
<code class="keyword">return</code>
<code class="variable">$default</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>45</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>46</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>47</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
</div>
</div>
<p> <span style="font-weight: bold;">3. 显示网页的源代码</span>
</p>
<div id="highlighter_415620" class="syntaxhighlighter  ">
<div class="lines">
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>1</code>
</td>
<td class="content">
<code class="plain">&lt;?php </code>
<code class="comments">// display source code</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>2</code>
</td>
<td class="content">
<code class="variable">$lines</code>
<code class="plain">= file(</code>
<code class="string">'http://google.com/'</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>3</code>
</td>
<td class="content">
<code class="keyword">foreach</code>
<code class="plain">(</code>
<code class="variable">$lines</code>
<code class="keyword">as</code>
<code class="variable">$line_num</code>
<code class="plain">=&gt; </code>
<code class="variable">$line</code>
<code class="plain">) {</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>4</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="comments">// loop thru each line and prepend line numbers</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>5</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="functions">echo</code>
<code class="string">"Line #&lt;b&gt;{$line_num}&lt;/b&gt; : "</code>
<code class="plain">. htmlspecialchars(</code>
<code class="variable">$line</code>
<code class="plain">) . </code>
<code class="string">"&lt;br&gt;\n"</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>6</code>
</td>
<td class="content">
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
</div>
</div>
<p> <span style="font-weight: bold;">4. 检查服务器是否使用HTTPS</span>
</p>
<div id="highlighter_323300" class="syntaxhighlighter  ">
<div class="lines">
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>1</code>
</td>
<td class="content">
<code class="keyword">if</code>
<code class="plain">(</code>
<code class="variable">$_SERVER</code>
<code class="plain">[</code>
<code class="string">'HTTPS'</code>
<code class="plain">] != </code>
<code class="string">"on"</code>
<code class="plain">) {</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>2</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="functions">echo</code>
<code class="string">"This is not HTTPS"</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>3</code>
</td>
<td class="content">
<code class="plain">}</code>
<code class="keyword">else</code>
<code class="plain">{</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>4</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="functions">echo</code>
<code class="string">"This is HTTPS"</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>5</code>
</td>
<td class="content">
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
</div>
</div>
<p> <span style="font-weight: bold;">5. 显示Facebook fans数量</span>
</p>
<div id="highlighter_51716" class="syntaxhighlighter  ">
<div class="lines">
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>1</code>
</td>
<td class="content">
<code class="keyword">function</code>
<code class="plain">fb_fan_count(</code>
<code class="variable">$facebook_name</code>
<code class="plain">){</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>2</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="comments">// Example: https://graph.facebook.com/digimantra</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>3</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$data</code>
<code class="plain">= json_decode(</code>
<code class="functions">file_get_contents</code>
<code class="plain">(</code>
<code class="string">"https://graph.facebook.com/"</code>
<code class="plain">.</code>
<code class="variable">$facebook_name</code>
<code class="plain">));</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>4</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="functions">echo</code>
<code class="variable">$data</code>
<code class="plain">-&gt;likes;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>5</code>
</td>
<td class="content">
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
</div>
</div>
<p> <span style="font-weight: bold;">6. 检测图片的主要颜色</span>
</p>
<div id="highlighter_822188" class="syntaxhighlighter  ">
<div class="lines">
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>01</code>
</td>
<td class="content">
<code class="variable">$i</code>
<code class="plain">= imagecreatefromjpeg(</code>
<code class="string">"image.jpg"</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>02</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>03</code>
</td>
<td class="content">
<code class="keyword">for</code>
<code class="plain">(</code>
<code class="variable">$x</code>
<code class="plain">=0;</code>
<code class="variable">$x</code>
<code class="plain">&lt;imagesx(</code>
<code class="variable">$i</code>
<code class="plain">);</code>
<code class="variable">$x</code>
<code class="plain">++) {</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>04</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="keyword">for</code>
<code class="plain">(</code>
<code class="variable">$y</code>
<code class="plain">=0;</code>
<code class="variable">$y</code>
<code class="plain">&lt;imagesy(</code>
<code class="variable">$i</code>
<code class="plain">);</code>
<code class="variable">$y</code>
<code class="plain">++) {</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>05</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="variable">$rgb</code>
<code class="plain">= imagecolorat(</code>
<code class="variable">$i</code>
<code class="plain">,</code>
<code class="variable">$x</code>
<code class="plain">,</code>
<code class="variable">$y</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>06</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="variable">$r</code>
   <code class="plain">= (</code>
<code class="variable">$rgb</code>
<code class="plain">&gt;&gt; 16) &amp; 0xFF;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>07</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="variable">$g</code>
   <code class="plain">= (</code>
<code class="variable">$rgb</code>
<code class="plain">&gt;&gt;  &amp; 0xFF;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>08</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="variable">$b</code>
   <code class="plain">= </code>
<code class="variable">$rgb</code>
<code class="plain">&amp; 0xFF;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>09</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>10</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="variable">$rTotal</code>
<code class="plain">+= </code>
<code class="variable">$r</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>11</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="variable">$gTotal</code>
<code class="plain">+= </code>
<code class="variable">$g</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>12</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="variable">$bTotal</code>
<code class="plain">+= </code>
<code class="variable">$b</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>13</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="variable">$total</code>
<code class="plain">++;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>14</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>15</code>
</td>
<td class="content">
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>16</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>17</code>
</td>
<td class="content">
<code class="variable">$rAverage</code>
<code class="plain">= </code>
<code class="functions">round</code>
<code class="plain">(</code>
<code class="variable">$rTotal</code>
<code class="plain">/</code>
<code class="variable">$total</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>18</code>
</td>
<td class="content">
<code class="variable">$gAverage</code>
<code class="plain">= </code>
<code class="functions">round</code>
<code class="plain">(</code>
<code class="variable">$gTotal</code>
<code class="plain">/</code>
<code class="variable">$total</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>19</code>
</td>
<td class="content">
<code class="variable">$bAverage</code>
<code class="plain">= </code>
<code class="functions">round</code>
<code class="plain">(</code>
<code class="variable">$bTotal</code>
<code class="plain">/</code>
<code class="variable">$total</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
</div>
</div>
<p> <span style="font-weight: bold;">7. 获取内存使用信息</span>
</p>
<div id="highlighter_991331" class="syntaxhighlighter  ">
<div class="lines">
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>01</code>
</td>
<td class="content">
<code class="functions">echo</code>
<code class="string">"Initial: "</code>
<code class="plain">.memory_get_usage().</code>
<code class="string">" bytes \n"</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>02</code>
</td>
<td class="content">
<code class="comments">/* prints</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>03</code>
</td>
<td class="content">
<code class="comments">Initial: 361400 bytes</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>04</code>
</td>
<td class="content">
<code class="comments">*/</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>05</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>06</code>
</td>
<td class="content">
<code class="comments">// let's use up some memory</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>07</code>
</td>
<td class="content">
<code class="keyword">for</code>
<code class="plain">(</code>
<code class="variable">$i</code>
<code class="plain">= 0; </code>
<code class="variable">$i</code>
<code class="plain">&lt; 100000; </code>
<code class="variable">$i</code>
<code class="plain">++) {</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>08</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$array</code>
<code class="plain">[]= md5(</code>
<code class="variable">$i</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>09</code>
</td>
<td class="content">
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>10</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>11</code>
</td>
<td class="content">
<code class="comments">// let's remove half of the array</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>12</code>
</td>
<td class="content">
<code class="keyword">for</code>
<code class="plain">(</code>
<code class="variable">$i</code>
<code class="plain">= 0; </code>
<code class="variable">$i</code>
<code class="plain">&lt; 100000; </code>
<code class="variable">$i</code>
<code class="plain">++) {</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>13</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="plain">unset(</code>
<code class="variable">$array</code>
<code class="plain">[</code>
<code class="variable">$i</code>
<code class="plain">]);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>14</code>
</td>
<td class="content">
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>15</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>16</code>
</td>
<td class="content">
<code class="functions">echo</code>
<code class="string">"Final: "</code>
<code class="plain">.memory_get_usage().</code>
<code class="string">" bytes \n"</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>17</code>
</td>
<td class="content">
<code class="comments">/* prints</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>18</code>
</td>
<td class="content">
<code class="comments">Final: 885912 bytes</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>19</code>
</td>
<td class="content">
<code class="comments">*/</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>20</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>21</code>
</td>
<td class="content">
<code class="functions">echo</code>
<code class="string">"Peak: "</code>
<code class="plain">.memory_get_peak_usage().</code>
<code class="string">" bytes \n"</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>22</code>
</td>
<td class="content">
<code class="comments">/* prints</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>23</code>
</td>
<td class="content">
<code class="comments">Peak: 13687072 bytes</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>24</code>
</td>
<td class="content">
<code class="comments">*/</code>
</td>
</tr></tbody></table>
</div>
</div>
</div>
<p> <span style="font-weight: bold;">8. 使用 gzcompress() 压缩数据</span>
</p>
<div id="highlighter_764658" class="syntaxhighlighter  ">
<div class="lines">
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>01</code>
</td>
<td class="content">
<code class="variable">$string</code>
<code class="plain">=</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>02</code>
</td>
<td class="content">
<code class="plain">"Lorem ipsum dolor sit amet, consectetur</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>03</code>
</td>
<td class="content">
<code class="plain">adipiscing elit. Nunc ut elit id mi ultricies</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>04</code>
</td>
<td class="content">
<code class="plain">adipiscing. Nulla facilisi. Praesent pulvinar,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>05</code>
</td>
<td class="content">
<code class="plain">sapien vel feugiat vestibulum, nulla dui pretium orci,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>06</code>
</td>
<td class="content">
<code class="plain">non ultricies elit lacus quis ante. Lorem ipsum dolor</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>07</code>
</td>
<td class="content">
<code class="plain">sit amet, consectetur adipiscing elit. Aliquam</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>08</code>
</td>
<td class="content">
<code class="plain">pretium ullamcorper urna quis iaculis. Etiam ac massa</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>09</code>
</td>
<td class="content">
<code class="plain">sed turpis tempor luctus. Curabitur sed nibh eu elit</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>10</code>
</td>
<td class="content">
<code class="plain">mollis congue. Praesent ipsum diam, consectetur vitae</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>11</code>
</td>
<td class="content">
<code class="plain">ornare a, aliquam a nunc. In id magna pellentesque</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>12</code>
</td>
<td class="content">
<code class="plain">tellus posuere adipiscing. Sed non mi metus, at lacinia</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>13</code>
</td>
<td class="content">
<code class="plain">augue. Sed magna nisi, ornare in mollis in, mollis</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>14</code>
</td>
<td class="content">
<code class="plain">sed nunc. Etiam at justo in leo congue mollis.</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>15</code>
</td>
<td class="content">
<code class="plain">Nullam in neque eget metus hendrerit scelerisque</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>16</code>
</td>
<td class="content">
<code class="plain">eu non enim. Ut malesuada lacus eu nulla bibendum</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>17</code>
</td>
<td class="content">
<code class="plain">id euismod urna sodales. ";</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>18</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>19</code>
</td>
<td class="content">
<code class="variable">$compressed</code>
<code class="plain">= gzcompress(</code>
<code class="variable">$string</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>20</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>21</code>
</td>
<td class="content">
<code class="functions">echo</code>
<code class="string">"Original size: "</code>
<code class="plain">. </code>
<code class="functions">strlen</code>
<code class="plain">(</code>
<code class="variable">$string</code>
<code class="plain">).</code>
<code class="string">"\n"</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>22</code>
</td>
<td class="content">
<code class="comments">/* prints</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>23</code>
</td>
<td class="content">
<code class="comments">Original size: 800</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>24</code>
</td>
<td class="content">
<code class="comments">*/</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>25</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>26</code>
</td>
<td class="content">
<code class="functions">echo</code>
<code class="string">"Compressed size: "</code>
<code class="plain">. </code>
<code class="functions">strlen</code>
<code class="plain">(</code>
<code class="variable">$compressed</code>
<code class="plain">).</code>
<code class="string">"\n"</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>27</code>
</td>
<td class="content">
<code class="comments">/* prints</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>28</code>
</td>
<td class="content">
<code class="comments">Compressed size: 418</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>29</code>
</td>
<td class="content">
<code class="comments">*/</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>30</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>31</code>
</td>
<td class="content">
<code class="comments">// getting it back</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>32</code>
</td>
<td class="content">
<code class="variable">$original</code>
<code class="plain">= gzuncompress(</code>
<code class="variable">$compressed</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
</div>
</div>
<p> <span style="font-weight: bold;">9. 使用PHP做Whois检查</span>
</p>
<div id="highlighter_719229" class="syntaxhighlighter  ">
<div class="lines">
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>01</code>
</td>
<td class="content">
<code class="keyword">function</code>
<code class="plain">whois_query(</code>
<code class="variable">$domain</code>
<code class="plain">) {</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>02</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>03</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="comments">// fix the domain name:</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>04</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$domain</code>
<code class="plain">= </code>
<code class="functions">strtolower</code>
<code class="plain">(trim(</code>
<code class="variable">$domain</code>
<code class="plain">));</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>05</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$domain</code>
<code class="plain">= preg_replace(</code>
<code class="string">'/^http:\/\//i'</code>
<code class="plain">, </code>
<code class="string">''</code>
<code class="plain">, </code>
<code class="variable">$domain</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>06</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$domain</code>
<code class="plain">= preg_replace(</code>
<code class="string">'/^www\./i'</code>
<code class="plain">, </code>
<code class="string">''</code>
<code class="plain">, </code>
<code class="variable">$domain</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>07</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$domain</code>
<code class="plain">= </code>
<code class="functions">explode</code>
<code class="plain">(</code>
<code class="string">'/'</code>
<code class="plain">, </code>
<code class="variable">$domain</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>08</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$domain</code>
<code class="plain">= trim(</code>
<code class="variable">$domain</code>
<code class="plain">[0]);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>09</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>10</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="comments">// split the TLD from domain name</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>11</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$_domain</code>
<code class="plain">= </code>
<code class="functions">explode</code>
<code class="plain">(</code>
<code class="string">'.'</code>
<code class="plain">, </code>
<code class="variable">$domain</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>12</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$lst</code>
<code class="plain">= </code>
<code class="functions">count</code>
<code class="plain">(</code>
<code class="variable">$_domain</code>
<code class="plain">)-1;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>13</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$ext</code>
<code class="plain">= </code>
<code class="variable">$_domain</code>
<code class="plain">[</code>
<code class="variable">$lst</code>
<code class="plain">];</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>14</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>15</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="comments">// You find resources and lists</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>16</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="comments">// like these on wikipedia:</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>17</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="comments">//</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>18</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="comments">// http://de.wikipedia.org/wiki/Whois</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>19</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="comments">//</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>20</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$servers</code>
<code class="plain">= </code>
<code class="keyword">array</code>
<code class="plain">(</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>21</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"biz"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.neulevel.biz"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>22</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"com"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.internic.net"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>23</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"us"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.nic.us"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>24</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"coop"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.nic.coop"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>25</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"info"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.nic.info"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>26</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"name"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.nic.name"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>27</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"net"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.internic.net"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>28</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"gov"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.nic.gov"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>29</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"edu"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.internic.net"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>30</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"mil"</code>
<code class="plain">=&gt; </code>
<code class="string">"rs.internic.net"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>31</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"int"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.iana.org"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>32</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"ac"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.nic.ac"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>33</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"ae"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.uaenic.ae"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>34</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"at"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.ripe.net"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>35</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"au"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.aunic.net"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>36</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"be"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.dns.be"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>37</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"bg"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.ripe.net"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>38</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"br"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.registro.br"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>39</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"bz"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.belizenic.bz"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>40</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"ca"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.cira.ca"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>41</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"cc"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.nic.cc"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>42</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"ch"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.nic.ch"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>43</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"cl"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.nic.cl"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>44</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"cn"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.cnnic.net.cn"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>45</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"cz"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.nic.cz"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>46</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"de"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.nic.de"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>47</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"fr"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.nic.fr"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>48</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"hu"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.nic.hu"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>49</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"ie"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.domainregistry.ie"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>50</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"il"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.isoc.org.il"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>51</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"in"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.ncst.ernet.in"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>52</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"ir"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.nic.ir"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>53</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"mc"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.ripe.net"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>54</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"to"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.tonic.to"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>55</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"tv"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.tv"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>56</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"ru"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.ripn.net"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>57</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"org"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.pir.org"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>58</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"aero"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.information.aero"</code>
<code class="plain">,</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>59</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="string">"nl"</code>
<code class="plain">=&gt; </code>
<code class="string">"whois.domain-registry.nl"</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>60</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>61</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>62</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="keyword">if</code>
<code class="plain">(!isset(</code>
<code class="variable">$servers</code>
<code class="plain">[</code>
<code class="variable">$ext</code>
<code class="plain">])){</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>63</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="keyword">die</code>
<code class="plain">(</code>
<code class="string">'Error: No matching nic server found!'</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>64</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>65</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>66</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$nic_server</code>
<code class="plain">= </code>
<code class="variable">$servers</code>
<code class="plain">[</code>
<code class="variable">$ext</code>
<code class="plain">];</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>67</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>68</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$output</code>
<code class="plain">= </code>
<code class="string">''</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>69</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>70</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="comments">// connect to whois server:</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>71</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="keyword">if</code>
<code class="plain">(</code>
<code class="variable">$conn</code>
<code class="plain">= </code>
<code class="functions">fsockopen</code>
<code class="plain">(</code>
<code class="variable">$nic_server</code>
<code class="plain">, 43)) {</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>72</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="functions">fputs</code>
<code class="plain">(</code>
<code class="variable">$conn</code>
<code class="plain">, </code>
<code class="variable">$domain</code>
<code class="plain">.</code>
<code class="string">"\r\n"</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>73</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="keyword">while</code>
<code class="plain">(!</code>
<code class="functions">feof</code>
<code class="plain">(</code>
<code class="variable">$conn</code>
<code class="plain">)) {</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>74</code>
</td>
<td class="content">
<code class="spaces">            </code>
<code class="variable">$output</code>
<code class="plain">.= </code>
<code class="functions">fgets</code>
<code class="plain">(</code>
<code class="variable">$conn</code>
<code class="plain">,128);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>75</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>76</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="plain">fclose(</code>
<code class="variable">$conn</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>77</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>78</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="keyword">else</code>
<code class="plain">{ </code>
<code class="keyword">die</code>
<code class="plain">(</code>
<code class="string">'Error: Could not connect to '</code>
<code class="plain">. </code>
<code class="variable">$nic_server</code>
<code class="plain">. </code>
<code class="string">'!'</code>
<code class="plain">); }</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>79</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>80</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="keyword">return</code>
<code class="variable">$output</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>81</code>
</td>
<td class="content">
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
</div>
</div>
<p> <span style="font-weight: bold;">10. 通过Email发送PHP错误</span>
</p>
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</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>01</code>
</td>
<td class="content">
<code class="plain">&lt;?php</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>02</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>03</code>
</td>
<td class="content">
<code class="comments">// Our custom error handler</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>04</code>
</td>
<td class="content">
<code class="keyword">function</code>
<code class="plain">nettuts_error_handler(</code>
<code class="variable">$number</code>
<code class="plain">, </code>
<code class="variable">$message</code>
<code class="plain">, </code>
<code class="variable">$file</code>
<code class="plain">, </code>
<code class="variable">$line</code>
<code class="plain">, </code>
<code class="variable">$vars</code>
<code class="plain">){</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>05</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$email</code>
<code class="plain">= "</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>06</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="plain">&lt;p&gt;An error (</code>
<code class="variable">$number</code>
<code class="plain">) occurred on line</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>07</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="plain">&lt;strong&gt;</code>
<code class="variable">$line</code>
<code class="plain">&lt;/strong&gt; </code>
<code class="keyword">and</code>
<code class="plain">in the &lt;strong&gt;file: </code>
<code class="variable">$file</code>
<code class="plain">.&lt;/strong&gt;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>08</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="plain">&lt;p&gt; </code>
<code class="variable">$message</code>
<code class="plain">&lt;/p&gt;";</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>09</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>10</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$email</code>
<code class="plain">.= </code>
<code class="string">"&lt;pre&gt;"</code>
<code class="plain">. print_r(</code>
<code class="variable">$vars</code>
<code class="plain">, 1) . </code>
<code class="string">"&lt;/pre&gt;"</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>11</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>12</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="variable">$headers</code>
<code class="plain">= </code>
<code class="string">'Content-type: text/html; charset=iso-8859-1'</code>
<code class="plain">. </code>
<code class="string">"\r\n"</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>13</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>14</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="comments">// Email the error to someone...</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>15</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="functions">error_log</code>
<code class="plain">(</code>
<code class="variable">$email</code>
<code class="plain">, 1, </code>
<code class="string">'[e-mail]'</code>
<code class="plain">, </code>
<code class="variable">$headers</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>16</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>17</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="comments">// Make sure that you decide how to respond to errors (on the user's side)</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>18</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="comments">// Either echo an error message, or kill the entire project. Up to you...</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>19</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="comments">// The code below ensures that we only "die" if the error was more than</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>20</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="comments">// just a NOTICE.</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>21</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="keyword">if</code>
<code class="plain">( (</code>
<code class="variable">$number</code>
<code class="plain">!== E_NOTICE) &amp;&amp; (</code>
<code class="variable">$number</code>
<code class="plain">&lt; 2048) ) {</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>22</code>
</td>
<td class="content">
<code class="spaces">        </code>
<code class="keyword">die</code>
<code class="plain">(</code>
<code class="string">"There was an error. Please try again later."</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>23</code>
</td>
<td class="content">
<code class="spaces">    </code>
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>24</code>
</td>
<td class="content">
<code class="plain">}</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>25</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>26</code>
</td>
<td class="content">
<code class="comments">// We should use our custom function to handle errors.</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>27</code>
</td>
<td class="content">
<code class="plain">set_error_handler(</code>
<code class="string">'nettuts_error_handler'</code>
<code class="plain">);</code>
</td>
</tr></tbody></table>
</div>
<div class="line alt2">
<table border="0"><tbody><tr>
<td class="number">
<code>28</code>
</td>
<td class="content"> </td>
</tr></tbody></table>
</div>
<div class="line alt1">
<table border="0"><tbody><tr>
<td class="number">
<code>29</code>
</td>
<td class="content">
<code class="comments">// Trigger an error... (var doesn't exist)</code>
</td>
</tr></tbody></table>
</div>
<table border="0"><tbody><tr>
<td class="number">
<code>30</code>
</td>
<td class="content">
<code class="functions">echo</code>
<code class="variable">$somevarthatdoesnotexist</code>
<code class="plain">;</code>
</td>
</tr></tbody></table>