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<?php $myGiantArray = [ [ 'Tomato' => [ 'Apple' => [ 'Orange' => [] ] ] ], [ 'Tomato' => [ 'Apple' => [ 'Orange' => [ 'Lemon' => [] ] ] ] ], [ 'Tomato' => [ 'Apple' => [ 'Pumpkin' => [] ] ] ] ]; $merged = []; foreach($myGiantArray as $subArray) { $merged = array_merge_recursive($merged, $subArray); } print_r($merged);
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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 - 8.2.19, 8.3.0 - 8.3.7
Array ( [Tomato] => Array ( [Apple] => Array ( [Orange] => Array ( [Lemon] => Array ( ) ) [Pumpkin] => Array ( ) ) ) )
preferences:
306.69 ms | 405 KiB | 339 Q