3v4l.org

run code in 300+ PHP versions simultaneously
<?php $o = new stdClass(); $o->{0} = 'foo'; $a = (array) $o; var_dump($a); var_dump($a[0]); var_dump($a['0']);
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array(1) { [0]=> string(3) "foo" } string(3) "foo" string(3) "foo"
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
array(1) { ["0"]=> string(3) "foo" } Notice: Undefined offset: 0 in /in/Gsjtv on line 6 NULL Notice: Undefined offset: 0 in /in/Gsjtv on line 7 NULL
preferences:
141.82 ms | 408 KiB | 5 Q