PHP through the Curl request API

POST request

function Postxmlcurl ($url, $xml) {
    $ch = Curl_init ();
    curl_setopt ($ch, Curlopt_post, true);
    curl_setopt ($ch, Curlopt_url, $url);
    curl_setopt ($ch, Curlopt_returntransfer, true);
    curl_setopt ($ch, Curlopt_postfields, $xml);
    curl_setopt ($ch, Curlopt_httpheader, Array (
        ' content-type:text/xml; Charset=utf-8 ',
        ' content-length: '. Strlen ($xml))
    );
    $response  = curl_exec ($ch);

    if ($response) {
        curl_close ($ch);
        return $response;
    } else {
        curl_close ($ch);
        return false;
    }
}

            $response = Postxmlcurl ($url, $xml);
            if (! $response) {
                //todo return
                false;
            } <span style= "White-space:pre" >	</span>
            $response = simplexml_load_string ($response, ' SimpleXMLElement ', libxml_nocdata);
            if (!is_object ($response)) {
                //todo return
                false;
            }
            $result = (array) $response;
            Todo

Request with certificate validation
function Post_xml_curl ($url, $xml, $cert = ', $key = ', $certpwd = ') {
    $ch = Curl_init ();
	curl_setopt ($ch, Curlopt_httpheader, Array (
	    ' content-type:text/xml; Charset=utf-8 ',
	    ' content-length: '. Strlen ($xml))
	);
    curl_setopt ($ch, Curlopt_ssl_verifypeer, 1);
    curl_setopt ($ch, Curlopt_ssl_verifyhost, 1);
    curl_setopt ($ch, Curlopt_post, true);
    curl_setopt ($ch, Curlopt_url, $url);
    curl_setopt ($ch, Curlopt_returntransfer, true);
    curl_setopt ($ch, Curlopt_postfields, $xml);

	if (Isset ($cert) && isset ($key) && isset ($certpwd)) {
		curl_setopt ($ch, Curlopt_sslcerttype, ' PEM ') );
		curl_setopt ($ch, Curlopt_sslcert, $cert);
		curl_setopt ($ch, CURLOPT_SSLCERTPASSWD, $certpwd);
		curl_setopt ($ch, Curlopt_sslkeytype, ' PEM ');
		curl_setopt ($ch, Curlopt_sslkey, $key);
	}

    $response  = curl_exec ($ch);
    Curl_close ($ch);
    return $response;
}