проблемы с файлом search_idx.php

function split_words($text)
{
    global $pun_user;
    static $noise_match, $noise_replace, $stopwords;

    if (empty($noise_match))
    {
        $noise_match =         array('[quote', '[code', '[url', '[img', '[email', '[color', '[colour', 'quote]', 'code]', 'url]', 'img]', 'email]', 'color]', 'colour]', '^', '$', '&', '(', ')', '<', '>', '`', '\'', '"', '|', ',', '@', '_', '?', '%', '~', '+', '[', ']', '{', '}', ':', '\\', '/', '=', '#', ';', '!', '*');
        $noise_replace =    array('',       '',      '',     '',     '',       '',       '',        '',       '',      '',     '',     '',       '',       '',        ' ', ' ', ' ', ' ', ' ', ' ', ' ', '',  '',   ' ', ' ', ' ', ' ', '',  ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', '' ,  ' ', ' ', ' ', ' ', ' ', ' ');

        $stopwords = (array)@file(PUN_ROOT.'lang/'.$pun_user['language'].'/stopwords.txt');
        $stopwords = array_map('trim', $stopwords);
    }

    // Clean up
    $patterns[] = '#&[\#a-z0-9]+?;#i';
    $patterns[] = '#\b[\w]+:\/\/[a-z0-9\.\-]+(\/[a-z0-9\?\.%_\-\+=&\/~]+)?#';
    $patterns[] = '#\[\/?[a-z\*=\+\-]+(\:?[0-9a-z]+)?:[a-z0-9]{10,}(\:[a-z0-9]+)?=?.*?\]#';
    $text = preg_replace($patterns, ' ', ' '.strtolower($text).' ');

    // Filter out junk
    $text = str_replace($noise_match, $noise_replace, $text);

    // Strip out extra whitespace between words
    $text = trim(preg_replace('#\s+#', ' ', $text));

    // Fill an array with all the words
    $words = explode(' ', $text);

    if (!empty($words))
    {
        while (list($i, $word) = @each($words))
        {
            $words[$i] = trim($word, '.');
            $num_chars = pun_strlen($word);

            if ($num_chars < 3 || $num_chars > 20 || in_array($word, $stopwords))
                unset($words[$i]);
        }
    }

    return array_unique($words);
}

function split_words($text)
{
    // Remove BBCode
    $text = preg_replace('/\[\/?(b|u|i|h|colou?r|quote|code|img|url|email|list)(?:\=[^\]]*)?\]/', ' ', $text);
    // Remove any apostrophes which aren't part of words
    $text = substr(preg_replace('((?<=\W)\'|\'(?=\W))', '', ' '.$text.' '), 1, -1);
    // Remove symbols and multiple whitespace
    $text = preg_replace('/[\^\$&\(\)<>`"\|,@_\?%~\+\[\]{}:=\/#\\\\;!\*\.\s]+/', ' ', $text);

    // Fill an array with all the words
    $words = array_unique(explode(' ', $text));
    // Remove any words that should not be indexed
    $words = array_filter($words, 'validate_search_word');

    if ($return != null)
        return $return;

    return $words;
}