3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $string = 'categoryparameterusedpricing_1'; preg_match("/[a-z_0-9]/", $string, $matches); print_r($matches);
based on G4cGK
Output for 4.3.0 - 7.2.0
Array ( [0] => c )