In PHP, how do I copy arrays with examples?

In PHP, there are various ways to copy arrays. The method you choose depends on whether you want a shallow copy or a deep copy. Here are some examples:

 1 [1] => 2 [2] => 3 )
print_r($array2); // Outputs: Array ( [0] => 100 [1] => 2 [2] => 3 )

// Deep copy using array_map
$array3 = array(1, 2, 3);
$array4 = array_map(function($value) {
    return $value; // Returns a new array with the same values
}, $array3);
$array4[0] = 200; // Changing the copied array
print_r($array3); // Outputs: Array ( [0] => 1 [1] => 2 [2] => 3 )
print_r($array4); // Outputs: Array ( [0] => 200 [1] => 2 [2] => 3 )
?>