I want to get the following data "PHPSESSID" from this script in a string:
<?php    
file_get_contents('https://www.bedandbreakfast.nl/?page=ajaxcb&do=updateBookingIntent&arrival=2015-08-22&departure=2015-08-23&src=booking_arrival');
$cookies = array();
foreach ($http_response_header as $hdr) {
    if (preg_match('/^Set-Cookie:\s*([^;]+)/', $hdr, $matches)) {
        parse_str($matches[1], $tmp);
        $cookies += $tmp;
    }
}
print_r($cookies);
?> 
I tried to run this script, only that wasn't working...
echo $cookies[PHPSESSID];
 
    