3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $_POST['keywords']="sample products!\@, products#$#\, sample "; $keywords = preg_replace(" ", ".",($_POST['keywords'])); echo $keywords;
Output for 4.3.11 - 7.1.0
Warning: preg_replace(): Empty regular expression in /in/XqCTG on line 3
Output for 4.3.0 - 4.3.10
Warning: Empty regular expression in /in/XqCTG on line 3