使用PHP Socket 编程模拟Http post和get请求

这里给大家分享一段使用php socket 编程模拟http post和get请求的代码，非常的实用，结尾部分我们再讨论下php模拟http请求的几种方法。

<?php /**
 * 使用php socket 编程模拟http post和get请求
 * @author koma
 */ class http{
    private $sp = "\r\n"; //这里必须要写成双引号     private $protocol = 'http/1.1';
    private $requestline = "";
    private $requestheader = "";
    private $requestbody = "";
    private $requestinfo = "";
    private $fp = null;
    private $urlinfo = null;
    private $header = array();
    private $body = "";
    private $responseinfo = "";
    private static $http = null; //http对象单例    
    private function __construct() {}
    public static function create() {
        if ( self::$http === null ) { 
            self::$http = new http();
        }
        return self::$http;
    }
    public function init($url) {
        $this->parseurl($url);
        $this->header['host'] = $this->urlinfo['host'];
        return $this;
    }
    public function get($header = array()) {
        $this->header = array_merge($this->header, $header);
        return $this->request('get');
    }
    public function post($header = array(), $body = array()) {
        $this->header = array_merge($this->header, $header);
        if ( !empty($body) ) {
            $this->body = http_build_query($body);
            $this->header['content-type'] = 'application/x-www-form-urlencoded';
            $this->header['content-length'] = strlen($this->body);
        }
        return $this->request('post');
    }
    private function request($method) {
        $header = "";
        $this->requestline = $method.' '.$this->urlinfo['path'].'?'.$this->urlinfo['query'].' '.$this->protocol;
        foreach ( $this->header as $key => $value ) {
            $header .= $header == "" ? $key.':'.$value : $this->sp.$key.':'.$value;
        }
        $this->requestheader = $header.$this->sp.$this->sp;
        $this->requestinfo = $this->requestline.$this->sp.$this->requestheader;
        if ( $this->body != "" ) {
            $this->requestinfo .= $this->body;
        }
        /*
         * 注意：这里的fsockopen中的url参数形式为""
         * 不能够带"http://"这种
         */
        $port = isset($this->urlinfo['port']) ? isset($this->urlinfo['port']) : '80';
        $this->fp = fsockopen($this->urlinfo['host'], $port, $errno, $errstr);
        if ( !$this->fp ) {
            echo $errstr.'('.$errno.')';
            return false;
        }
        if ( fwrite($this->fp, $this->requestinfo) ) {
            $str = "";
            while ( !feof($this->fp) ) {
                $str .= fread($this->fp, 1024);
            }
            $this->responseinfo = $str;
        }
        fclose($this->fp);
        return $this->responseinfo;
    }
    private function parseurl($url) {
        $this->urlinfo = parse_url($url);
    }
} // $url = "http://news.163.com/14/1102/01/aa0pfa7q00014aed.html";
$url = ""; $http = http::create()->init($url); /* 发送get请求 
echo $http->get(array(
    'user-agent' => 'mozilla/5.0 (windows nt 6.1; wow64) applewebkit/537.36 (khtml, like gecko) chrome/35.0.1916.153 safari/537.36',
));
*/
 /* 发送post请求 */ echo $http->post(array(
        'user-agent' => 'mozilla/5.0 (windows nt 6.1; wow64) applewebkit/537.36 (khtml, like gecko) chrome/35.0.1916.153 safari/537.36',
), array('username'=>'发一个中文', 'age'=>22));

php 模拟 http请求

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

<?php
echo "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 = "=" . $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：

<?php
echo "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
)
)

方法三：

这个要借助第三方类库httpclient可以到这里下载：

＜?php
require_once 'httpclient.class.php';
$params = array('web' =＞ 'www.baidu.com',
'pwd' =＞ '123456',
'action' =＞ 'check',
'pseid' =＞ 'nde005',
'amt' =＞ 1);
$pagecontents = httpclient::quickpost('http://localhost:81/flandy/getpost3.php', $params);
$result = explode(',', $pagecontents);
print_r($result);
?＞