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<?php $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."; preg_match_all("/(?<!\d)\d{8}(?!\d)/", $text, $matches); print_r($matches); foreach($matches[0] as $SN_match){ print_r($SN_match); }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
Array ( [0] => Array ( [0] => 01923033 [1] => 01980414 [2] => 01923033 [3] => 07993682 ) ) 01923033019804140192303307993682