php post raw

function http_post($url, $data_string) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'X-AjaxPro-Method:ShowList',
'Content-Type: application/json; charset=utf-8',
'Content-Length: ' . strlen($data_string))
);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}