PHP模拟POST的步骤

function post_url($url, $post = "", $host = "www.ydtuiguang.com", $referrer = 'http://www.ydtuiguang.com/', $proxy = -1){    if(function_exists("curl_init")){        $ch = @curl_init();        @curl_setopt($ch, CURLOPT_URL, $url);        if(!empty($proxy["address"]))            @curl_setopt($ch, CURLOPT_PROXY, strpos($proxy["address"], "http") === 0 ? $proxy["address"] : "http://".$proxy["address"]);        if(!empty($proxy["account"]) && !empty($proxy["password"]))            @curl_setopt($ch, CURLOPT_PROXYUSERPWD, $proxy["account"].":".$proxy["password"]);        @curl_setopt($ch, CURLOPT_REFERER, $referrer);        @curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.0)");        @curl_setopt($ch, CURLOPT_COOKIEJAR, COOKIE_FILE_PATH);        @curl_setopt($ch, CURLOPT_COOKIEFILE, COOKIE_FILE_PATH);        @curl_setopt($ch, CURLOPT_HEADER, 0);        @curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);        @curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);        @curl_setopt($ch, CURLOPT_TIMEOUT, 1000);        if (!empty($post)) {            @curl_setopt($ch, CURLOPT_POST, 1);            @curl_setopt($ch, CURLOPT_POSTFIELDS, $post);        }        $result = @curl_exec($ch);        @curl_close($ch);    }elseif(function_exists("fsockopen")){        $httpheader = "POST ".$url." HTTP/1.1\r\n";           $httpheader .= "Accept: */*\r\n";           $httpheader .= "Accept-Language: zh-cn\r\n";           $httpheader .= "Referer: ".$referrer."\r\n";           $httpheader .= "Content-Type: application/x-www-form-urlencoded\r\n";           $httpheader .= "User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n";           $httpheader .= "Host: ".$host."\r\n";           $httpheader .= "Content-Length: ".strlen($post)."\r\n";           $httpheader .= "Connection: Keep-Alive\r\n";           $httpheader .= "\r\n";           $httpheader .= $post;           $fd = fsockopen($host, 80);           fwrite($fd, $httpheader);           $result = "";           while(!feof($fd)){               $result .= fread($fd, 8192);           }           fclose($fd);       }elseif(function_existes('file_get_contents')){        $httpheader = "POST ".$url." HTTP/1.1\r\n";           $httpheader .= "Accept: */*\r\n";           $httpheader .= "Accept-Language: zh-cn\r\n";           $httpheader .= "Referer: ".$referrer."\r\n";           $httpheader .= "Content-Type: application/x-www-form-urlencoded\r\n";           $httpheader .= "User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n";           $httpheader .= "Host: ".$host."\r\n";           $httpheader .= "Content-Length: ".strlen($post)."\r\n";           $httpheader .= "Connection: Keep-Alive\r\n";                   $opts = array(           'http'=>array(                'method'=>"POST",                'header'=>$httpheader,                'content'=>$post           )         );                    $context = stream_context_create($opts);        $result = file_get_contents($url, 'r', $context);    }    return $result;}
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后台模拟 哪种都差不多 最常用的curl模块