Largest Common End

<?php
//$firstArray = ['hi', 'php', 'java', 'csharp', 'sql', 'html', 'css', 'js'];
//$secondArray = ['hi', 'php', 'java', 'js', 'softuni', 'nakov', 'java', 'learn'];

$firstArray = ['hi', 'php', 'java', 'xml', 'csharp', 'sql', 'html', 'css', 'js'];
$secondArray = ['nakov', 'java', 'sql', 'html', 'css', 'js'];

//$firstArray = ['I', 'love', 'programming', 'S'];
//$secondArray = ['Learn', 'Java', 'or', 'C#'];

$firstArrayLenght = count($firstArray);
$secondArrayLenght = count($secondArray);

$leftCounter = 0;
$rightCounter = 0;

$shorterArray = min($firstArrayLenght, $secondArrayLenght);

for($i = 0; $i < $shorterArray; $i++) {
    if ($firstArray[$i] == $secondArray[$i]) {
        $leftCounter++;
    }
}
for ($i = $shorterArray; $i >= 0; $i--) {
    if ($secondArray[$i] == $firstArray[$i]) {
        $rightCounter++;
    }
}
if ($leftCounter > $rightCounter) {
    echo "Left Counter: " . $leftCounter;
} else if ($leftCounter < $rightCounter) {
    echo "Right Counter: " .  $rightCounter;
} else {
    echo "0";
}