3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $matches=array(); $string = 'This is a [templateVar]'; preg_match_all("/^[a-z]*@[a-z]*.[a-z]{2}?.[a-z]{2}/", "usde@dev.co.in", $matches); var_dump($matches);
based on ngkZS
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(1) { [0]=> array(1) { [0]=> string(14) "usde@dev.co.in" } }