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<?php $keyword = "userId:123"; if (preg_match_all('/(userId\:(\d)+)/', $keyword, $m)) { var_dump($m); }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(3) { [0]=> array(1) { [0]=> string(10) "userId:123" } [1]=> array(1) { [0]=> string(10) "userId:123" } [2]=> array(1) { [0]=> string(1) "3" } }