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<?php $array1 = array("a" => 1); $array2 = array("a" => 2); $array_merged = array_merge_recursive($array1, $array2); var_dump($array_merged); ?>
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
array(1) { ["a"]=> array(2) { [0]=> int(1) [1]=> int(2) } }
preferences:
178.27 ms | 404 KiB | 189 Q