<?php
class Palindrome
{
    public static function isPalindrome($word)
    {

        $word = str_replace(' ', '', $word);
        $word = preg_replace('/[^A-Za-z0-9\-]/', '', $word);

        $lowercaseWord = strtolower($word);
        $reverseWord = strrev($lowercaseWord);

        if ($reverseWord == $lowercaseWord) {
            return true;
        }
        return false;
    }
}

echo Palindrome::isPalindrome('Deleveled');