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<?php $arrays = [ 51 => [ 5 => "", 2 => "", 8 => "" ], 78 => [ 18 => "", 23 => "", 21 => "" ], 8 => [ 18 => "", 23 => "", 21 => "" ] ]; $result = array_reduce($arrays, function($carry, $item) { $carry = array_merge($carry, $item); return $carry; }, []); if (count(array_filter($result)) === 0) { echo "array contains only empty values"; }
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array contains only empty values
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111.57 ms | 408 KiB | 5 Q