function _b_html_to_text_autolink(&$contents) {    //오토 링크
    $pattern = "/(http|https|ftp|mms):\/\/[0-9a-z-]+([\._0-9a-z-]+)+(:[0-9]{2,4})?\/?"; // domain+port
    $pattern .= "([\.~_0-9a-z-]+\/?)*";    // sub roots
    $pattern .= "(\S+\.[_0-9a-z]+)?";     // file & extension string
    $pattern .= "(\?[_0-9a-z#%&;=\-\+]+)*";    // parameters
    $pattern .= '/i';
    $replacement = "<a href="\"\\0\"" target="\"_blank\"">\\0</a>";
    $contents = preg_replace($pattern, $replacement, $contents, -1);
    return $contents;
}