3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function initialiseStr($var) { return isset($var) ? $var : ''; } $foo = initialiseStr($foo); var_dump($foo);
Output for 5.0.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Undefined variable: foo in /in/Nvi2o on line 8 string(0) ""
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: foo in /in/Nvi2o on line 8 string(0) ""