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<?php function func(&$data) { foreach ($data as $key => $value) { if (is_array($value)) { func($data[$key]); } } } $data = [ ['k' => [0]], ['k' => [1]], ]; func($data); debug_zval_dump($data); //array_replace_recursive($data[0], $data[1]); echo json_encode($data);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) refcount(2){ [0]=> reference refcount(1) { array(1) refcount(1){ ["k"]=> reference refcount(1) { array(1) refcount(2){ [0]=> int(0) } } } } [1]=> reference refcount(1) { array(1) refcount(1){ ["k"]=> reference refcount(1) { array(1) refcount(2){ [0]=> int(1) } } } } } [{"k":[0]},{"k":[1]}]

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