3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $postcode = ' bl3 1rb '; $array = []; for ($i = 0; $i < 10000; $i++) { $array[] = preg_replace('/\s+/', '', $postcode); }
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0alpha1