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<?php $array = [ [ '', 1, '', 108, '', ], [ '', 1, '', 108, '', 101, ], [ '', '', 108, '', ] ]; $array = array_unique(array_filter(array_merge(...$array))); var_dump($array);
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.7
array(3) { [1]=> int(1) [3]=> int(108) [10]=> int(101) }
preferences:
68.07 ms | 1123 KiB | 4 Q