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。

复制代码 代码如下:
<?php /**
 * 使用PHP Socket 编程模拟Http post和get请求
 * @author koma
 */ class Http{
    private $sp = " "; //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"www.xxx.com"
         * 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://localhost/httppro/post.php"; $http = Http::create()->init($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：

复制代码 代码如下:
<?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 ";
    $header .= "Host:127.0.0.1 ";
    $header .= "Referer:/flandy/post.php ";
    $header .= "Content-Type: application/x-www-form-urlencoded ";
    $header .= "Content-Length: ".$length." ";
    $header .= "Connection: Close ";
    //添加post的字符串
    $header .= $params." ";
   

    //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 == " " || $line == " ")) {
             $inheader = 0;
        }
        if ($inheader == 0) {
          echo $line;
        }
    }

fclose($fp);
?>

getpost.php的内容如下

复制代码 代码如下:
<?php
echo "this is the data posted";
echo "<pre>";
print_r($_REQUEST);
echo "</pre>";
?>

结果输出：

复制代码 代码如下:
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：

复制代码 代码如下:
<?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：

复制代码 代码如下:
<?php
echo "returndata<br>";
echo "<pre>";
print_r($_REQUEST);
echo "</pre>";
?>

结果输出：

复制代码 代码如下:
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：http://scripts.incutio.com/httpclient/

复制代码 代码如下:
＜?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);
?＞