Online PHP editor | refs for AR718

<?php $array = [ 1 => ['Name' => 'John', 'Age' => '20', 'Code' => 'ABC 12'], 2 => ['Name' => 'John', 'Age' => '21', 'Code' => 'ABC 1'], 3 => ['Name' => 'Mary', 'Age' => '20', 'Code' => 'ABC 10'], 4 => ['Name' => 'John', 'Age' => '20', 'Code' => 'ABC 1'], 5 => ['Name' => 'John', 'Age' => '20', 'Code' => 'ABC 100'], 6 => ['Name' => 'John', 'Age' => '20', 'Code' => 'ABC 2'], ]; uasort( $array, fn($a, $b) => [$a['Name'], $b['Age']] <=> [$b['Name'], $a['Age']] // name (ASC) then by age (DESC) ?: strnatcasecmp($a['Code'], $b['Code']) // then by code (ASC / naturally) ); var_export($array);