Home  >  Article  >  Backend Development  >  TP框架的 redirect方法是如何实现跳转的?一看源码,完全不能理解啊

TP框架的 redirect方法是如何实现跳转的?一看源码,完全不能理解啊

WBOY
WBOYOriginal
2016-06-23 13:53:481091browse

protected function redirect($url,$params=array(),$delay=0,$msg='') {
$url = U($url,$params);
redirect($url,$delay,$msg);
}



先生存一个url,然后递归传入第三第四个参数。。


它的跳转到底是怎么实现的???


回复讨论(解决方案)

那你去看一下 redirect 函数的定义呀

函数体内的redirect 是调用了一个函数:

参见 框架内置的functions.php文件
redirect
说明:
void redirect($url, $time=0, $msg='')
URL重定向
源码:

    function redirect($url, $time=0, $msg='') {        //多行URL地址支持        $url = str_replace(array("\n", "\r"), '', $url);        if (empty($msg))            $msg = "系统将在{$time}秒之后自动跳转到{$url}!";        if (!headers_sent()) {            // redirect            if (0 === $time) {                header('Location: ' . $url);            } else {                header("refresh:{$time};url={$url}");                echo($msg);            }            exit();        } else {            $str = "<meta http-equiv='Refresh' content='{$time};URL={$url}'>";            if ($time != 0)                $str .= $msg;            exit($str);        }    }

// URL重定向function redirect($url, $time=0, $msg='') {    //多行URL地址支持    $url = str_replace(array("\n", "\r"), '', $url);    if (empty($msg))        $msg = "系统将在{$time}秒之后自动跳转到{$url}!";    if (!headers_sent()) { //如果标头没有发出        // redirect        if (0 === $time) {            header('Location: ' . $url); //如果没有指定延时时间,则发一个跳转标头        } else {            header("refresh:{$time};url={$url}");//如果制定了延时时间,则发一个延时刷新的标头            echo($msg);        }        exit();    } else { //否则就发送 meta 标记,含义同上        $str = "<meta http-equiv='Refresh' content='{$time};URL={$url}'>";        if ($time != 0)            $str .= $msg;        exit($str);    }}

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article:CI phpNext article:telnet send命令怎么写