PHP模拟http请求的方法详解

本文实例讲述了PHP模拟http请求的方法。分享给大家供大家参考，具体如下：

方法一：利用php的socket编程来直接给接口发送数据来模拟post的操作。

建立两个文件post.php,getpost.php

post.php内容如下：

<?php $flag = 0; $params = ''; $errno = ''; $errstr = ''; //要post的数据$argv = array(  'var1'=>'abc',  'var2'=>'how are you , my friend??');//构造要post的字符串foreach ($argv as $key=>$value) {  if ($flag!=0) {    $params .= "&";    $flag = 1;  }  $params.= $key."="; $params.= urlencode($value);  $flag = 1;  }  $length = strlen($params);   //创建socket连接  $fp = fsockopen("localhost",81,$errno,$errstr,10) or exit($errstr."--->".$errno);  //构造post请求的头  $header = "POST /flandy/getpost.php HTTP/1.1/r/n";  $header .= "Host:127.0.0.1/r/n";  $header .= "Referer:/flandy/post.php/r/n";  $header .= "Content-Type: application/x-www-form-urlencoded/r/n";  $header .= "Content-Length: ".$length."/r/n";  $header .= "Connection: Close/r/n/r/n";  //添加post的字符串  $header .= $params."/r/n";  //发送post的数据  fputs($fp,$header);  $inheader = 1;  while (!feof($fp)) {    $line = fgets($fp,1024); //去除请求包的头只显示页面的返回数据    if ($inheader && ($line == "/n" || $line == "/r/n")) {       $inheader = 0;    }    if ($inheader == 0) {     echo $line;    }  }fclose($fp);?>

getpost.php的内容如下:

<?phpecho "this is the data posted";echo "<pre>";print_r($_REQUEST);echo "</pre>";?>

结果输出：

this is the data postedArray(  [var1] => abc  [var2] => how are you , my friend??)

以上代码在本机81端口下已经通过测试。

方法二：使用PHP的curl扩展或HttpClient.class.php类，这两个非常类似，下面简单的列出curl的实现代码。

两个文件post2.php和getpost2.php

post2.php的内容如下：

<?php$psecode = 'NDE005';$website = 'www.baidu.com';$amt = 1;$pwd = 123456;$ch = curl_init();$curl_url = "http://localhost:81/flandy/getpost2.php?web=" . $website ."&pwd=" . $pwd . "&action=check&pseid=" . $psecode ."&amt=" . $amt;curl_setopt($ch, CURLOPT_URL, $curl_url);curl_setopt($ch, CURLOPT_POST, 1);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);//不直接输出，返回到变量$curl_result = curl_exec($ch);$result = explode(',', $curl_result);curl_close($ch);print_r($result);?>

getpost2.php的内容如下：

<?phpecho "returndata<br>";echo "<pre>";print_r($_REQUEST);echo "</pre>";?>

结果输出：

Array ( [0] => returndataArray(  [web] => 'wwwbaiducom'  [pwd] => 123456  [action] => check  [pseid] => 'NDE005'  [amt] => 1))