PHP로 HTTP 요청하기

PHP에서 socket을 이용해 HTTP GET 요청하기.

 function requestHTTP($url, $port=80)
{
        $result = '';

        $ip = gethostbyname(getDomainName($url));
        $sock = socket_create(AF_INET, SOCK_STREAM, getprotobyname('tcp'));
        $connected = @socket_connect($sock, $ip, $port);

        $header = "GET ".getResourcePath($url)." HTTP/1.1\r\n";
        $header .= "Host: ".$ip."\r\n";
        $header .= "Accept: */*\r\n";
        $header .= "Connection: close\r\n\r\n";

        if ($connected) {
                socket_write($sock, $header, strlen($header));
                while ($buf = socket_read($sock, 1024)) $result .= $buf;
        }

       socket_close($sock);
       return $result;
}



function getDomainName($url)
{
        $temp = str_replace('http://', '', $url);
        $result = explode("/", $temp);
        return $result[0];
}




function getResourcePath($url)
{
        $temp = str_replace('http://', '', $url);
        $arr = explode("/", $temp);
        $cnt = count($arr);
        for ($i=1; $i<$cnt; $i++) $result .= '/'.$arr[$i];
        return $result;
}