In PHP, what is the recommended approach for recursively merging arrays while also allowing for overwriting existing values?

When recursively merging arrays in PHP, the recommended approach is to use the `array_replace_recursive()` function. This function merges two or more arrays by recursively replacing the values of the first array with the values from the following arrays. This allows for overwriting existing values while also merging nested arrays. 

$array1 = [
    'key1' => 'value1',
    'key2' => [
        'subkey1' => 'subvalue1'
    ]
];

$array2 = [
    'key2' => [
        'subkey2' => 'subvalue2'
    ],
    'key3' => 'value3'
];

$result = array_replace_recursive($array1, $array2);

print_r($result);

Keywords

PHP array_merge_recursive array_merge array_replace_recursive array_replace

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