3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $A = "1 131 2 12 53"; preg_match_all("/( ?)131( ?)/", $A, $phones); var_dump($phones);
Output for 4.3.0 - 7.1.0
array(3) { [0]=> array(1) { [0]=> string(5) " 131 " } [1]=> array(1) { [0]=> string(1) " " } [2]=> array(1) { [0]=> string(1) " " } }