php获取当前url完整地址

//获取当前访问的完整url地址
function getCurUrl() {
    $url = 'http://';

    if (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') {
        $url = 'https://';
    }

    if ($_SERVER['SERVER_PORT'] != '') {
        $url .= $_SERVER['SERVER_NAME'] . ':' . $_SERVER['SERVER_PORT'] . $_SERVER['REQUEST_URI'];
    } else {
        $url .= $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'];
    }

    return $url;
}