PHP curl

什么是curl

curl是利用URL语法在命令行方式下工作的开源文件传输工具。

PHP 的用处

使用PHP的cURL库可以简单和有效地去抓网页。你只需要运行一个脚本，然后分析一下你所抓取的网页，然后就可以以程序的方式得到你想要的数据了。无论是你想从从一个链接上取部分数据，或是取一个XML文件并把其导入数据库，那怕就是简单的获取网页内容，cURL 是一个功能强大的PHP库。

demo1

<code><span><span><?php </span><span>//1.初始化，创建一个新cURL资源 </span><span>$ch</span> = curl_init();
    <span>//2.设置URL和相应的选项</span>
    curl_setopt(<span>$ch</span>, CURLOPT_URL, <span>"http://www.lampbrother.net/"</span>) 
    curl_setopt(<span>$ch</span>, CURLOPT_HEADER, <span>0</span>); 
    <span>//3.抓取URL并把它传递给浏览器 </span><span>$data</span> = curl_exec(<span>$ch</span>); 
    <span>//4.显示获得的数据</span>
    var_dump(<span>$data</span>);
    <span>//5.关闭cURL资源，并且释放系统资源 </span>
    curl_close(<span>$ch</span>);
<span>?></span></span></span></code>

demo2 post数据

<code>﹤?php
<span>$phoneNumber</span>　=　<span>'13812345678'</span>;
<span>$message</span>　=　<span>'This　message　was　generated　by　curl　and　php'</span>;
<span>$curlPost</span>　=　<span>'pNUMBER='</span>　.　urlencode(<span>$phoneNumber</span>)　.　<span>'&MESSAGE='</span>　.　urlencode(<span>$message</span>)　.　<span>'&SUBMIT=Send'</span>;
<span>$ch</span>　=　curl_init();
curl_setopt(<span>$ch</span>,　CURLOPT_URL,　<span>'http://www.lxvoip.com/sendSMS.php'</span>);
curl_setopt(<span>$ch</span>,　CURLOPT_HEADER,　<span>1</span>);
curl_setopt(<span>$ch</span>,　CURLOPT_RETURNTRANSFER,　<span>1</span>);
curl_setopt(<span>$ch</span>,　CURLOPT_POST,　<span>1</span>);
curl_setopt(<span>$ch</span>,　CURLOPT_POSTFIELDS,　<span>$curlPost</span>);
<span>$data</span>　=　curl_<span>exec</span>();
curl_close(<span>$ch</span>);
?﹥</code>

demo3 使用代理服务器

<code>﹤?php　
<span>$ch</span>　=　curl_init();
curl_setopt(<span>$ch</span>,　CURLOPT_URL,　<span>'http://www.cmx8.cn'</span>);
curl_setopt(<span>$ch</span>,　CURLOPT_HEADER,　<span>1</span>);
curl_setopt(<span>$ch</span>,　CURLOPT_RETURNTRANSFER,　<span>1</span>);
curl_setopt(<span>$ch</span>,　CURLOPT_HTTPPROXYTUNNEL,　<span>1</span>);
curl_setopt(<span>$ch</span>,　CURLOPT_PROXY,　<span>'proxy.lxvoip.com:1080'</span>);
curl_setopt(<span>$ch</span>,　CURLOPT_PROXYUSERPWD,　<span>'user:password'</span>);
<span>$data</span>　=　curl_<span>exec</span>();
curl_close(<span>$ch</span>);
?﹥</code>

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以上就介绍了PHP curl，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。