3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $cadena = 'Álvaro / Re-quena'; $patrón = '/[^a-zA-ZñÑ\s]/i'; $sustitución = ''; echo mb_preg_replace($patrón, $sustitución, $cadena);
based on WEFap
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Call to undefined function mb_preg_replace() in /in/mqruC:6 Stack trace: #0 {main} thrown in /in/mqruC on line 6
Process exited with code 255.
Output for 5.3.22 - 5.6.28
Fatal error: Call to undefined function mb_preg_replace() in /in/mqruC on line 6
Process exited with code 255.