<?php
class Palindrome
{
    public static function isPalindrome($word)
    {
        $word = strtolower($word);
        $wordLength = strlen($word);
        $wordSplitPoint = ceil($wordLength / 2);

        if ($wordLength % 2 == 0) {
            $firstHalf = substr($word, 0, $wordSplitPoint);
            $secondHalf = substr($word, $wordSplitPoint, $wordSplitPoint);
        } else {
            $firstHalf = substr($word, 0, $wordSplitPoint-1);
            $secondHalf = substr($word, $wordSplitPoint, $wordSplitPoint);
        }

        $secondHalfReversed = strrev($secondHalf);

        if ($firstHalf == $secondHalfReversed) {
            return TRUE;
        } else {
            return FALSE;
        }
    }
}
echo Palindrome::isPalindrome('Deleveled');