Prva

//zadacata u kratko glasi vaka, imame vgnezdena niza (so bezkonechna dubina) i treba da ispintame kolku zborovi od nizata se palindromi. reshena e skroz i se padnala na ispitot vo juni.

<?php

// 121156, Nikola Furnadjiski

function isPalindrome($word)
{
    $reverse = strrev($word); // reverse the word
    if ($word == $reverse) // compare if  the original word is same as the reverse of the same word
        return true;
    else
        return false;
}

function getPalindromes($a)
{
    $palindromes=array();
    $it = new RecursiveIteratorIterator(new RecursiveArrayIterator($a));
    foreach ($it as $v) {
        if(isPalindrome($v))
            array_push($palindromes, $v);
    }

    return array_unique($palindromes);
}

// Test Cases!!!

$arr = array(
         array(5, '' , 'kalabalak'),
         array('agatha', 0.75 , 5,
              array(2, 'a', 1.15)
         ),
         array(
              array('txt'),
         1.15 , 'this is not a palindrome')
);

$arr1 = array('zz', 'txxt', 3);


print_r(getPalindromes($arr));
echo "<br>";
echo "<br>";
print_r(getPalindromes($arr1));