3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $str = preg_replace('/(\w)(\W*)(\w)?/e', "strtoupper('$1').strtolower('$3')", 'test example.Hello World abc'); echo $str; ?>
based on NCk2Z
Output for 7.0.0 - 7.2.6
Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /in/MWI9Y on line 2
Output for 5.5.24 - 5.6.28
Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /in/MWI9Y on line 2 TeSt ExAmPlEhElLo WoRlDaBc
Output for 5.3.19 - 5.4.45
TeSt ExAmPlEhElLo WoRlDaBc