PHP #1

palindrome.php

<?php 
/**A palindrome is a word that reads the same backward or forward. Write a function that checks if a given word is a palindrome.
 * Character case should be ignored. For example, isPalindrome("Deleveled") should return true as character case should be ignored, resulting in "deleveled", which is a palindrome since it reads the same backward and forward.
**/
class Palindrome
{
    public static function isPalindrome($word)
    {
        $word              = trim($word); 
        $word              = strtolower($word);
        $chr_word          = str_split($word);
        $chr_word_rsv      = array_reverse($chr_word);
        return ($chr_word_rsv == $chr_word) ? true : false;
    }
}
echo Palindrome::isPalindrome('level'); //palindrome