3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [1,2,3,4]; foreach ($array as $i => &$v) { unset($array[$i]); var_dump($array); } ?>
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.21, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
array(3) { [1]=> int(2) [2]=> int(3) [3]=> int(4) } array(2) { [2]=> int(3) [3]=> int(4) } array(1) { [3]=> int(4) } array(0) { }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(3) { [1]=> int(2) [2]=> int(3) [3]=> int(4) } array(2) { [2]=> int(3) [3]=> int(4) } array(1) { [3]=> int(4) } array(0) { }

preferences:
199.19 ms | 402 KiB | 209 Q