$i = 1;
        $ret = '';

        do {
            if (GRAPHEME_EXTR_COUNT === $type) {
                --$size;
            } elseif (GRAPHEME_EXTR_MAXBYTES === $type) {
                $size -= strlen($s[$i]);
            } else {
                $size -= iconv_strlen($s[$i], 'UTF-8//IGNORE');
            }

            if ($size >= 0) {
                $ret .= $s[$i];
            }
        } while (isset($s[++$i]) && $size > 0);

        $next += strlen($ret);

        return $ret;
    }

    public static function grapheme_strlen($s)
    {
        preg_replace('/'.GRAPHEME_CLUSTER_RX.'/u', '', $s, -1, $len);

        return 0 === $len && '' !== $s ? null : $len;
    }

    public static function grapheme_substr($s, $start, $len = 2147483647)
    {
        preg_match_all('/'.GRAPHEME_CLUSTER_RX.'/u', $s, $s);

        $slen = count($s[0]);
        $start = (int) $start;

        if (0 > $start) {
            $start += $slen;
        }
        if (0 > $start) {
            return false;
        }
        if ($start >= $slen) {
            return false;
        }

        $rem = $slen - $start;

        if (0 > $len) {
            $len += $rem;
        }
        if (0 === $len) {
            return '';
        }
        if (0 > $len) {
            return false;
        }
        if ($len > $rem) {
            $len = $rem;
        }

        return implode('', array_slice($s[0], $start, $len));
    }

    public static function grapheme_substr_workaround62759($s, $start, $len)
    {
        // Intl based http://bugs.php.net/62759 and 55562 workaround

        if (2147483647 == $len) {
            return grapheme_substr($s, $start);
        }

        $s .= '';
        $slen = grapheme_strlen($s);
        $start = (int) $start;

        if (0 > $start) {
            $start += $slen;
        }
        if (0 > $start) {
            return false;
        }
        if ($start >= $slen) {
            return false;
        }

        $rem = $slen - $start;

        if (0 > $len) {
            $len += $rem;
        }
        if (0 === $len) {
            return '';
        }
        if (0 > $len) {
            return false;
        }
        if ($len > $rem) {
            $len = $rem;
        }

        return grapheme_substr($s, $start, $len);
    }

    public static function grapheme_strpos($s, $needle, $offset = 0)
    {
        return self::grapheme_position($s, $needle, $offset, 0);
    }

    public static function grapheme_stripos($s, $needle, $offset = 0)
    {
        return self::grapheme_position($s, $needle, $offset, 1);
    }

    public static function grapheme_strrpos($s, $needle, $offset = 0)
    {
        return self::grapheme_position($s, $needle, $offset, 2);
    }

    public static function grapheme_strripos($s, $needle, $offset = 0)
    {
        return self::grapheme_position($s, $needle, $offset, 3);
    }

    public static function grapheme_stristr($s, $needle, $beforeNeedle = false)
    {
        return mb_stristr($s, $needle, $beforeNeedle, 'UTF-8');
    }

    public static function grapheme_strstr($s, $needle, $beforeNeedle = false)
    {
        return mb_strstr($s, $needle, $beforeNeedle, 'UTF-8');
    }

    private static function grapheme_position($s, $needle, $offset, $mode)
    {
        if (!preg_match('/./us', $needle .= '')) {
            return false;
        }
        if (!preg_match('/./us', $s .= '')) {
            return false;
        }
        if ($offset > 0) {
            $s = self::grapheme_substr($s, $offset);
        } elseif ($offset < 0) {
            if (defined('HHVM_VERSION_ID') || PHP_VERSION_ID < 50535 || (50600 <= PHP_VERSION_ID && PHP_VERSION_ID < 50621) || (70000 <= PHP_VERSION_ID && PHP_VERSION_ID < 70006)) {
                $offset = 0;
            } else {
                return false;
            }
        }

        switch ($mode) {
            case 0: $needle = iconv_strpos($s, $needle, 0, 'UTF-8'); break;
            case 1: $needle = mb_stripos($s, $needle, 0, 'UTF-8'); break;
            case 2: $needle = iconv_strrpos($s, $needle, 'UTF-8'); break;
            default: $needle = mb_strripos($s, $needle, 0, 'UTF-8'); break;
        }

        return $needle ? self::grapheme_strlen(iconv_substr($s, 0, $needle, 'UTF-8')) + $offset : $needle;
    }
}
<br />
<b>Fatal error</b>:  Uncaught Error: Class 'Patchwork\PHP\Shim\Intl' not found in /home/acumstiu/gpszone.ro/vendor/patchwork/utf8/src/Patchwork/Utf8/Bootup.php:114
Stack trace:
#0 /home/acumstiu/gpszone.ro/includes/utf/utf_tools.php(29): Patchwork\Utf8\Bootup::initIntl()
#1 /home/acumstiu/gpszone.ro/common.php(97): require('/home/acumstiu/...')
#2 /home/acumstiu/gpszone.ro/viewforum.php(20): include('/home/acumstiu/...')
#3 {main}
  thrown in <b>/home/acumstiu/gpszone.ro/vendor/patchwork/utf8/src/Patchwork/Utf8/Bootup.php</b> on line <b>114</b><br />