3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array('all', 'pippo' => 'ciao'); $array2 = array('pippo' => 'ciao'); echo $array[0]; echo $array2[0];
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
all Warning: Undefined array key 0 in /in/O4rpo on line 6
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
all Notice: Undefined offset: 0 in /in/O4rpo on line 6
Output for 7.3.32 - 7.3.33, 7.4.26
all
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
all Notice: Undefined offset: 0 in /in/O4rpo on line 6
preferences:
293.14 ms | 402 KiB | 460 Q