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run code in 300+ PHP versions simultaneously
<?php $array = [ [ 'blue_dog_1' => 2 ], [ 'red_dog_1' => 4 ], [ 'red_dog_2' => 6 ] ]; print_r(array_reduce($array, 'array_merge', []));
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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Array ( [blue_dog_1] => 2 [red_dog_1] => 4 [red_dog_2] => 6 )
preferences:
190.15 ms | 404 KiB | 299 Q