Online PHP editor | output for pn5OT

<?php $value = "[Code]< AA-1>[WST-2587 ] hello world WST-2589 IC-111"; print($value); print("\n"); $trimPattern = '/^[”’"\'(<]*@?(.+?)[.”’"\'\,!?:;)>]*$/'; print($trimPattern); print("\n"); $projects = array('IC', 'WST'); $calloutPattern = "/^(?:" . implode('|', $projects) . ")-[0-9]+$/"; print($calloutPattern); print("\n"); $words = preg_split('/(\s+)/', $value); print "\nWords:\n"; foreach ($words as $word) { print($word); print("\n"); } preg_match_all('/[(<\[]\s*((' . implode('|', $projects) . ')-[0-9]+)\s*[\]>)]/', $value, $matches); print "\nMatches:\n"; foreach ($matches[1] as $match) { print($match); print("\n"); } $words = array_merge($words, $matches[1]); //$words = $words + $matches[1]; print "\nMerged Words:\n"; foreach ($words as $word) { print($word); print("\n"); }