How to use .php jump file

With the development of Internet technology, websites have more and more functions, and page jumps are becoming more and more complex. In websites, it is often necessary to jump to other pages, and some parameters need to be passed during the jump process, such as the address of the web page, user name, password, etc. In order to solve this problem, the developer added a .php jump file to the web page to realize the requirements of web page jump and parameter transfer. The

.php jump file is a server-side script file through which automatic jumps and parameter transfer of web pages can be realized. The jump file can be placed in any folder in the server's home directory or root directory for easy access by users. Jump files usually have a .php extension, such as index.php, login.php, etc.

Using .php jump files can achieve the following functions:

1. Page jump

Users can click a link or button, etc. Trigger the jump file to jump to the specified web page. This is widely used in navigation, advertising spaces, etc. in websites.

2. Parameter passing

Jump file can pass parameters to the target page. For example, when jumping to the user registration page, the user's source address, user type and other parameters can be passed to the registration page through the jump file, so that the registration page can be processed differently according to different situations.

3. User verification

By implementing the user verification function in the jump file, you can restrict access to certain pages. For example, only logged-in users can access certain pages. Login verification through jump files can effectively prevent users from illegal access.

The above functions are widely used in actual development. For beginners, how to write a .php jump file is an essential skill.

The following is a simple example to illustrate how to write a .php jump file:

header("Location: http://www.baidu.com ");
exit;
?>

The function of this file is to jump to the Baidu homepage. The first line of code is a PHP function. The header() function is used to set the header information returned to the browser. For example, the Location field tells the browser the page address to jump to. The exit() function is used to end the current PHP script.

In addition to simple page jumps, jump files can also add various parameters. The following is an example of a jump file with parameters:

$username=$_POST['username'];
$password=$_POST['password'];
if($username=='admin' && $password=='123456')
{

header("Location: index.php?type=admin&name=".$username);

}
else
{

header("Location: login.php?errmsg=用户名或密码错误");

}
?>

Two variables $username and $password are defined in this jump file and are passed in POST mode. In the login verification, if the username and password are correct, it will jump to the administrator page index.php with the parameters type and name; if the verification fails, it will jump back to the login page with the error message errmsg.

In short, through .php jump files, we can realize page jumps, parameter transfer, user verification and other functions, which can help us better build a fully functional website. You need to pay attention to security when using it, protect user privacy information and prevent malicious attacks.

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