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run code in 300+ PHP versions simultaneously
<?php class A { public static $p = array( 'abc' => array('test' => array('a')), 'test123' => 'b', ); } class B extends A { public static $p = array( 'abc' => array('test' => array('c')), 'test1' => 'd', ); public static function mergeRecursive($depth = null) { $arrays = func_get_args(); if (!is_array($depth)) array_shift($arrays); else $depth = null; $firstArray = array_shift($arrays); foreach ($arrays as &$array) { if ($depth == 1) { $firstArray = array_merge($firstArray, $array); } else { foreach ($array as $key => &$value) { if (is_int($key)) { $firstArray[] = &$value; } else if (isset($firstArray[$key]) && is_array($firstArray[$key]) && is_array($array[$key])) { $firstArray[$key] = self::mergeRecursive($depth - 1, $firstArray[$key], $value); } else { $firstArray[$key] = &$value; } } } } return $firstArray; } } var_dump((new ReflectionClass('A'))->getDefaultProperties()); $r = new ReflectionClass('B'); $result = array(); do { $result = B::mergeRecursive(2, $r->getDefaultProperties(), $result); } while($r = $r->getParentClass()); $r = new ReflectionClass('A'); var_dump($r->getDefaultProperties());

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