$text = "You have been assigned to the job #3 Megastar 4(01923033)
OSD jackpot needs adjusting.
The job is for Icon's Stadium Bar - GMV1028.
The job machines are - 01980414 , - 01923033 , - 07993682
This job has a priority of Non-Critical Fault / Medium.
The job is scheduled for Monday, 14 July, 2014 at 02:29 PM.";
$s = 'firstname.lastname@example.org';
$matches = array();
$t = preg_match('/01923033(.*?)\The job is for/s', $text, $matches);