php发送http请求的几种方式

1、curl仍然是最好的HTTP库，没有之一。 可以解决任何复杂的应用场景中的HTTP 请求
2. 文件流式的HTTP请求比较适合处理简单的HTTP POST/GET请求，但不适用于复杂的HTTP请求
3. PECL_HTTP扩展写代码更加简洁，省事， 但成熟度不好，编程接口不统一，文档和实例匮乏。 

 

1、file_get_contents 发送get请求

<?php /** * 发送post请求 * @param string $url 请求地址 * @param array $post_data post键值对数据 * @return string */ function send_post($url, $post_data) { $postdata = http_build_query($post_data); $options = array( 'http' => array( 'method' => 'POST', 'header' => 'Content-type:application/x-www-form-urlencoded', 'content' => $postdata, 'timeout' => 15 * 60 // 超时时间（单位:s） ) ); $context = stream_context_create($options); $result = file_get_contents($url, false, $context); return $result; }

$post_data = array( 'username' => 'abcdef', 'password' => '123456' ); send_post('http://xxx.com', $post_data);

2、通过CURL发送get请求

 

<?php $ch=curl_init('http://www.xxx.com/xx.html'); curl_setopt($ch,CURLOPT_RETURNTRANSFER,true); curl_setopt($ch,CURLOPT_BINARYTRANSFER,true); $output=curl_exec($ch); $fh=fopen("out.html",'w'); fwrite($fh,$output); fclose($fh);

3、通过fsocket发送get请求

/**
 * Socket版本
 * 使用方法：
 * $post_string = "app=socket&version=beta";
 * request_by_socket('blog.snsgou.com', '/restServer.php', $post_string);
 */
function request_by_socket($remote_server,$remote_path,$post_string,$port = 80,$timeout = 30) { $socket = fsockopen($remote_server, $port, $errno, $errstr, $timeout); if (!$socket) die("$errstr($errno)"); fwrite($socket, "POST $remote_path HTTP/1.0"); fwrite($socket, "User-Agent: Socket Example"); fwrite($socket, "HOST: $remote_server"); fwrite($socket, "Content-type: application/x-www-form-urlencoded"); fwrite($socket, "Content-length: " . （strlen($post_string) + 8） . ""); fwrite($socket, "Accept:*/*"); fwrite($socket, ""); fwrite($socket, "mypost=$post_string"); fwrite($socket, ""); $header = ""; while ($str = trim(fgets($socket, 4096))) { $header .= $str; } $data = ""; while (!feof($socket)) { $data .= fgets($socket, 4096); } return $data; }