How to merge two arrays in PHP?

To merge two arrays in PHP, you can use the array_merge() function. Here's an example:

$array1 = [1, 2, 3];
$array2 = [4, 5, 6];

$mergedArray = array_merge($array1, $array2);

print_r($mergedArray);

Output:

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
    [5] => 6
)

The array_merge() function takes multiple arrays as arguments and returns a new array that contains all the elements from the input arrays. It appends the elements of the second array to the first array.