Thank you. That work :)
Here is the code.
<?php
$ch = curl_init('http://DOMAIN/scp/login.php');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_COOKIESESSION, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, 'username=USERNAME&passwd=PASSWORD');
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_HEADER, 1); // DO NOT RETURN HTTP HEADERS
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); // RETURN THE CONTENTS OF THE CALL
$data = curl_exec($ch);
curl_close($ch);
$pattern = "#Set-Cookie: (.*); path=(.*)\n#";
preg_match_all($pattern, $data, $matches);
$cookie = str_replace('Set-Cookie: ', '', trim($matches));
$ch = curl_init('http://DOMAIN/scp/tickets.php');
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_COOKIE, $cookie);
curl_setopt($ch, CURLOPT_POSTFIELDS, 'a=open&email=EMAIL&name=NAME&source=Email&deptId=4&subject=SUBJECT&issue=CONTENT&alertuser=1');
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_HEADER, 0); // DO NOT RETURN HTTP HEADERS
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); // RETURN THE CONTENTS OF THE CALL
$data = curl_exec($ch);
curl_close($ch);
?>