PHP REST PROXY

<?php
    $url_source = "http://IP:PORT";
    $url = str_replace($_SERVER['SCRIPT_NAME'], $url_source, $_SERVER['REQUEST_URI']);

    function HandleHeaderLine( $curl, $header_line ) {
        header($header_line, true);
        return strlen($header_line);
    }

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HEADERFUNCTION, "HandleHeaderLine");
    $headers = array();
    foreach (getallheaders() as $header => $value) {
        $headers[] = $header.": ".$value;
    }
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $_SERVER['REQUEST_METHOD']);
    if($_SERVER['REQUEST_METHOD'] == 'PUT') {
        $fp = fopen('php://input', 'r');

        curl_setopt($ch, CURLOPT_PUT, true);
        curl_setopt($ch, CURLOPT_INFILE, $fp);
        curl_setopt($ch, CURLOPT_INFILESIZE, (int)$_SERVER['CONTENT_LENGTH']);
    } else {
        curl_setopt($ch, CURLOPT_POSTFIELDS, $_POST);
    }
    curl_exec($ch);
    curl_close($ch);
?>