php curl详解

Jun 23, 2016 pm 01:12 PM

cURL介绍cURL 是一个利用URL语法规定来传输文件和数据的工具,支持很多协议,如HTTP、FTP、TELNET等。最爽的是,PHP也支持 cURL 库。本文将介绍 cURL 的一些高级特性,以及在PHP中如何运用它

基本结构(1)初始化

curl_init()
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(2)设置变量

curl_setopt()
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(3)执行并获取结果

curl_exec()
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(4)释放cURL句柄

curl_close()
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cURL实现Get和PostGet方式实现

//初始化$ch = curl_init();//设置选项,包括URLcurl_setopt($ch, CURLOPT_URL, "http://www.jb51.net");curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch, CURLOPT_HEADER, 0);//执行并获取HTML文档内容$output = curl_exec($ch);//释放curl句柄curl_close($ch);//打印获得的数据print_r($output);
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Post方式实现

$url = "http://localhost/web_services.php";$post_data = array ("username" => "bob","key" => "12345");$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);// post数据curl_setopt($ch, CURLOPT_POST, 1);// post的变量curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);$output = curl_exec($ch);curl_close($ch);//打印获得的数据print_r($output);
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以上方式获取到的数据是json格式的,使用json_decode函数解释成数组。

$output_array = json_decode($output,true);
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如果使用json_decode($output)解析的话,将会得到object类型的数据。

ubuntu下错误的解决

PHP Fatal error: Call to undefined function curl_init() in /var/www/protected/config/functions.php on line 132

在终端命令窗口键入

sudo apt-get install php5-curlsudo service apache restart

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