array_merge() function is used to merge two or more arrays into a single array.
<?php
$array1 = array("a" => "apple", "b" => "banana");
$array2 = array("c" => "cherry", "d" => "date");
$result = array_merge($array1, $array2);
print_r($result);
?>Output:
Array ( [a] => apple [b] => banana [c] => cherry [d] => date )