<?php function func(&$data) { foreach ($data as $key => $value) { if (is_array($value)) { func($data[$key]); } } } $data = [ ['k' => [0]], ['k' => [1]], ]; ob_start(); debug_zval_dump($data[1]['k']); echo substr(ob_get_clean(), 9, -1)."\n"; func($data); ob_start(); debug_zval_dump($data[1]['k']); echo substr(ob_get_clean(), 9, -1)."\n"; array_replace_recursive($data[0], $data[1]); echo json_encode($data);
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