使用PHP Socket 編程模擬Http post和get請求

這裏給你們分享一段使用PHP Socket 編程模擬Http post和get請求的代碼，很是的實用，結尾部分咱們再討論下php模擬http請求的幾種方法。

<?php /** 
 * 使用PHP Socket 編程模擬Http post和get請求 
 * @author koma 
 */ class Http{ 
    private $sp = "\r\n"; //這裏必需要寫成雙引號     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 $http = null; //Http對象單例     
    private function __construct() {} 
    public static function create() { 
        if ( self::$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：這裏的fsockopen中的url參數形式爲"www.xxx.com" 
         * 不可以帶"http://"這種 
         */
        $port = isset($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); 

/* 發送get請求  
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', 
)); 
*/
/* 發送post請求 */ 
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'=>'發一箇中文', 'age'=>22));

php 模擬 http請求

方法一：利用php的socket編程來直接給接口發送數據來模擬post的操做。

創建兩個文件post.php,getpost.php
post.php內容以下：

<?php
 $flag = 0;
 $params = '';
 $errno = '';
 $errstr = '';
 //要post的數據
$argv = array(
    'var1'=>'abc',
    'var2'=>'how are you , my friend??');
//構造要post的字符串
foreach ($argv as $key=>$value) {
    if ($flag!=0) {
        $params .= "&";
        $flag = 1;
    }
    $params.= $key."="; $params.= urlencode($value);
    $flag = 1;
    }
    $length = strlen($params);
     //建立socket鏈接
    $fp = fsockopen("localhost",81,$errno,$errstr,10) or exit($errstr."--->".$errno);
    //構造post請求的頭
    $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";
   
    //發送post的數據
    fputs($fp,$header);
    $inheader = 1;
    while (!feof($fp)) {
        $line = fgets($fp,1024); //去除請求包的頭只顯示頁面的返回數據
        if ($inheader && ($line == "\n" || $line == "\r\n")) {
             $inheader = 0;
        }
        if ($inheader == 0) {
          echo $line;
        }
    }
 fclose($fp);
?>

getpost.php的內容以下：

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

結果輸出：

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

以上代碼在本機81端口下已經經過測試。

 

方法二：使用PHP的curl擴展或HttpClient.class.php類，這兩個很是相似，下面簡單的列出curl的實現代碼。
兩個文件post2.php和getpost2.php
post2.php的內容以下：

<?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);//不直接輸出，返回到變量
$curl_result = curl_exec($ch);
$result = explode(',', $curl_result);
curl_close($ch);
print_r($result);
?>

getpost2.php的內容以下：

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

結果輸出：

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

 

方法三：這個要藉助第三方類庫HttpClient能夠到這裏下載：http://scripts.incutio.com/httpclient/

＜?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);
?＞