printPalindromes2.php

<?php
function printPalindromes($str)
{
    #$str = strtolower(preg_replace("'\s+'", '', $str));
    #$str = strtolower(preg_replace("([^A-Za-z0-9])", "", $str));
    $palindrom = $str;
    $str1 = strtolower($str);
    $matches = array();

    $str = $str1;
    for ($i = 0; $i < strlen($str); $i++) {
        $str2 = substr($str, $i);
        for ($j = 0; $j < strlen($str2); $j++) {
            $tmp = substr($str2, 0, $j+1);
            if( $tmp == strrev($tmp)){
                $matches[] = $tmp;
            }
        }
        if( $str == strrev($str)){
            $matches[] = $str;
        }
    }

    $matches = array_unique(array_filter($matches));
    $found = count($matches);

    if ($found == 0) {
        echo 'No Palindrom found';
    } else {
        echo 'The Word "'.$palindrom.'" contains '.$found.' palindromes:' . '<br>';
        foreach ($matches as $key => $match) {
            echo $match . '<br>';
        }
    }

}
printPalindromes('madam');