PHP Program to Split Array and Add First Part to the End | Set 2

<?php
// PHP program to Split the array and
// add the first part to the end

/* Function to reverse arr[] from index
start to end*/
function rvereseArray(&$arr, $start, $end) {
    while ($start < $end) {
        $temp = $arr[$start];
        $arr[$start] = $arr[$end];
        $arr[$end] = $temp;
        $start++;
        $end--;
    }
}

// Function to print an array
function printArray(&$arr, $size) {
    for ($i = 0; $i < $size; $i++)
        echo $arr[$i] . " ";
}

/* Function to left rotate arr[] of size n by k */
function splitArr(&$arr, $k, $n) {
    rvereseArray($arr, 0, $n - 1);
    rvereseArray($arr, 0, $n - $k - 1);
    rvereseArray($arr, $n - $k, $n - 1);
}

/* Driver program to test above functions */
$arr = array( 12, 10, 5, 6, 52, 36 );
$n = sizeof($arr);
$k = 2;

// Function calling
splitArr($arr, $k, $n);
printArray($arr, $n);

?>