3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array =[ [198765431100000000 => 'Foo'], [1800000000 => 'Robert'], [591000000 => 'albert'], ['4430000000' => 'son'], [1100000000 => 'Anna'], ]; array_multisort( array_map(key(...), $array), $array ); var_export($array);
Output for 8.1.32, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array ( 0 => array ( 591000000 => 'albert', ), 1 => array ( 1100000000 => 'Anna', ), 2 => array ( 1800000000 => 'Robert', ), 3 => array ( 4430000000 => 'son', ), 4 => array ( 198765431100000000 => 'Foo', ), )
preferences:
50.52 ms | 407 KiB | 5 Q