3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $matches=array(); $string = 'This is a [templateVar]'; preg_match_all("/[\[\]]/", $string, $matches); var_dump($matches);
based on Ev0Yr
Output for 4.3.0 - 7.2.0
array(1) { [0]=> array(2) { [0]=> string(1) "[" [1]=> string(1) "]" } }