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<?php $array = [ [ 'blue_dog_1' => 2 ], [ 'red_dog_1' => 4 ], [ 'red_dog_2' => 6 ] ]; print_r(array_reduce($array, 'array_merge', []));
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [blue_dog_1] => 2 [red_dog_1] => 4 [red_dog_2] => 6 )

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