php 合并数组并保留键

Posted 2021-05-04

$array1 = array('a' => 1, 'b' => 2, 'c' => 3);
$array2 = array('d' => 4, 'e' => 5, 'f' => 6, 'a' => 'new value', '123' => 456);


//array_replace
print_r(array_replace($array1, $array2));
//UNION
print_r($array2 + $array1);