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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(0) { } [1]=> array(0) { } [2]=> array(0) { } }