class Palindrome
{
    public static function isPalindrome($word)
    {
        $word = strtolower($word);

        if(strrev($word) != $word){
            return false;
        }

        for ($i = 0, $j = strlen($word)-1; $i < $j; $i++, $j--) {
            if ($word[$i] !== $word[$j]) {
              return false;
            }
        return true;
        }
    }
}

echo Palindrome::isPalindrome('Deleveled');
?>