What is php random domain name jump? How to achieve

Recently, many webmasters or companies need to redirect multiple domain names. But for those users who have not purchased advanced tools such as CDN, is there any simple and easy solution? The answer is yes, generating random jump domain names through php is a good way.

What is php random domain name jump?

The so-called php random domain name jump is to use the function of generating random numbers in php to generate the address of a jump link. When the user accesses the link, the address will randomly jump to several domain names through php. a domain name in . This method is more suitable for multiple domain names that need to be randomly jumped.

Steps to implement PHP random domain name jump

1. First store the domain name that needs to be jumped in the array.

$urls = array(
    "http://www.example.com",
    "http://www.example2.com",
    "http://www.example3.com",
    "http://www.example4.com",
    "http://www.example5.com",
);

2. Use the rand() function to generate a random number, which is the subscript of the array, and then obtain the domain name address corresponding to the subscript.

$index = rand(0, count($urls) - 1);
$url = $urls[$index];

3. Use the header() function to implement the jump.

header("Location:" . $url);
exit();

Complete code implementation

<?php
$urls = array(
    "http://www.example.com",
    "http://www.example2.com",
    "http://www.example3.com",
    "http://www.example4.com",
    "http://www.example5.com",
);
$index = rand(0, count($urls) - 1);
$url = $urls[$index];
header("Location:" . $url);
exit();
?>

Optimization

The above code may have some concerns, for example, whether the user will jump to a different page when refreshing the page. Domain name, if there is a difference in speed between multiple domain names, will it cause unstable access performance, etc. We can set a cookie to record the random number of the user's first jump. When the user visits the website again, the cookie value can be obtained and jumped to the domain name address.

<?php
$urls = array(
    "http://www.example.com",
    "http://www.example2.com",
    "http://www.example3.com",
    "http://www.example4.com",
    "http://www.example5.com",
);
if (isset($_COOKIE[&#39;url_index&#39;])) {//如果cookie存在
    $index = $_COOKIE[&#39;url_index&#39;];//获取首次访问时的随机数
} else {//首次访问
    $index = rand(0, count($urls) - 1);//生成随机数
    setcookie(&#39;url_index&#39;, $index, time() + 3600 * 24 * 30);//设置cookie
}
$url = $urls[$index];
header("Location:" . $url);
exit();
?>

In this way, it can effectively prevent users from jumping to different domain names when refreshing the page, and also allows users to always access websites with the same domain name, improving access performance and user experience.

Summary

Using PHP to randomly generate jump domain names can make it easier for webmasters or companies to jump to multiple domain names. At the same time, by setting cookies, the access performance of the website can be optimized. and user experience. The above implementation method can also be flexibly applied to other scenarios that require jumps, such as advertising display, accessing different content in different areas, etc.

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