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function cutext($text, $words = 3, $separator = ' ')
{
    $current_pos = 0;
    for($i = 0; $i < $words; $i++)
    {
        $current_pos = strpos($text, $separator, ($current_pos + 1));
    }
    return substr($text, 0, $current_pos);
}

substr(strip_tags($text), 0, 250);