3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php for($i=0; $i<40; $i++); $str .= '0'; var_dump($str);
Output for 5.3.28 - 5.3.29, 5.4.20 - 7.2.0
Notice: Undefined variable: str in /in/huJRc on line 3 string(1) "0"
Output for 5.0.4 - 5.3.27, 5.4.0 - 5.4.19
Notice: Undefined variable: str in /in/Ja6Hg on line 3 string(1) "0"
Output for 4.3.1 - 5.0.3
Notice: Undefined variable: str in /in/Ja6Hg on line 3 string(1) "0"
Output for 4.3.0
Notice: Undefined variable: str in /in/huJRc on line 3 string(1) "0"