Merge Two array without function in php

<?php

$array1 = array(1,2,3,4,5);

$array2 = array(6,7,8,9,10);

for($i=0;$i<count($array2);$i++){

$array1[] = $array2[$i];

}

echo"<pre>";

print_r($array1);

?>

Output:- 

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
    [5] => 6
    [6] => 7
    [7] => 8
    [8] => 9
    [9] => 10
)