3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $_POST['keywords']="sample products!@, products#$#, sample"; $keywords = preg_replace("/[^A-Za-z, ?!]/", '',($_POST['keywords'])); echo $keywords;
Output for 4.3.0 - 7.2.0
sample products!, products, sample