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<?php $array = [ 'd' => [ 'f', 'e', ], 'a' => [ 'c', 'j', ], ]; ksort($array); foreach ($array as $key => &$values) { sort($values, SORT_NATURAL); } print_r($array);
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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Array ( [a] => Array ( [0] => c [1] => j ) [d] => Array ( [0] => e [1] => f ) )
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 ( [a] => Array ( [0] => c [1] => j ) [d] => Array ( [0] => e [1] => f ) )

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