3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [ [ 20190529 => [ 30 => [ 17 => [ 3846 => 0, ], ], ], ], [ 20190516 => [ 31 => [ 17 => [ 512 => 0, ], ], ], ], ]; $keys = []; foreach($arr as $k => $item){ $keys[] = key($item); } array_multisort($keys, SORT_NATURAL, $arr); print_r($arr);die;
Output for 7.1.25 - 7.1.28, 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 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1
Array ( [0] => Array ( [20190516] => Array ( [31] => Array ( [17] => Array ( [512] => 0 ) ) ) ) [1] => Array ( [20190529] => Array ( [30] => Array ( [17] => Array ( [3846] => 0 ) ) ) ) )
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

preferences:
188.25 ms | 408 KiB | 5 Q