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<?php $arr = [ 0 => [ 1 => "Beanie", ], 1 => [ 2 => "Cap", ] , 2 => [ 1 => "Beanie with Logo", ], ]; print_r(array_merge(...$arr));die;
Output for 7.1.25 - 7.1.33, 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
Array ( [0] => Beanie [1] => Cap [2] => Beanie with Logo )
preferences:
156.58 ms | 407 KiB | 5 Q