receive curl request - php

Question

i am using curl in my program.
and my code is :
$tref = $_GET['tref'];
$url = "https://paypaad.bankpasargad.com/PaymentTrace";
$curl_session = curl_init($url); // Initiate CURL session -> notice: CURL should be enabled.
curl_setopt($curl_session, CURLOPT_POST, 1); // Set post method on.
//curl_setopt($curl_session, CURLOPT_FOLLOWLOCATION, 1); // Follow where ever it goes
curl_setopt($curl_session, CURLOPT_HEADER, 0); //Don't return http headers
//curl_setopt($curl_session, CURLOPT_RETURNTRANSFER, 1); // Return the content of the call
$post_data = "tref=".$tref;
curl_setopt($curl_session, CURLOPT_POSTFIELDS, $post_data);
// Get returning data
$output = curl_exec($curl_session);
print_r($output);
print_r($post_data);
but when i use this code in my hosting , $output not set and when use another server this code correctly.
how i doing in my server.

Answer 1

hey found this code :
$data = curl_exec($curl_handle);
if ($data === FALSE) {
die(curl_error($curl_handle));
} else {
$html_str .= $data;
}
and when i use this code , i face this this error :
SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed
then i search this error and face this link
http://unitstep.net/blog/2009/05/05/using-curl-in-php-to-access-https-ssltls-protected-sites/
and i add this code
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
before
curl_exec():

Answer 2

Make sure your server curl is enable..
Change ;extension=php_curl.dll
To
extension=php_curl.dll
in php.ini you also check this Call to undefined function curl_init().?