3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = array(); unset( $var['foo']['bar'] ); $var = false; unset( $var['foo']['bar'] );
Output for 8.1.0 - 8.1.29, 8.2.0 - 8.2.21, 8.3.0 - 8.3.9
Deprecated: Automatic conversion of false to array is deprecated in /in/YNBIg on line 8
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Warning: Cannot unset offset in a non-array variable in /in/YNBIg on line 8
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
Notice: Undefined index: foo in /in/YNBIg on line 4
preferences:
281.97 ms | 403 KiB | 360 Q