Can php achieve page jump?

PHP language can realize web page jump, and you can specify the jump page link address when jumping. In PHP, you can use the header() function to implement page jump operations. The usage of the header() function is introduced in detail below.

The header() function is a very commonly used function in PHP, used to send HTTP header information to the browser. Through this function, any HTTP header information can be output in the browser, including specifying the jump address.

First, we need to determine the target URL address of the jump, which can be stored in a variable, as follows:

$url = "http://www.example.com";

Then, we can use the header() function to implement the jump , as follows:

header("Location: ".$url);

It should be noted that no other content can be output before executing the header() function, otherwise the jump will be unsuccessful. Therefore, before using the header() function, you can use the ob_start() function to enable the caching mechanism to avoid outputting other content. The code is as follows:

<?php
ob_start();
$url = "http://www.example.com";
header("Location: ".$url);
ob_end_flush();
?>

In addition, you can also specify the status code of the HTTP response, for example , when the jump page does not exist, a 404 status code can be returned, which can be implemented in PHP through the header() function, as follows:

header("HTTP/1.1 404 Not Found");

In the header() function, the first parameter indicates the status of the HTTP response code and corresponding reason phrase. Although the status code is numeric, it should be written as a string in the header() function. The reason phrase can also be customized.

In summary, PHP language can easily implement page jumps. By using the header() function, you can specify the jump target URL address, HTTP response status code and other related content when jumping. Things to note No other content can be output before executing the header() function. This can be achieved by using the ob_start() function to enable the caching mechanism.

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