How to determine domain name jump in php

With the continuous development of the Internet and website construction, domain name management has increasingly become a must-have skill for web developers. For some small and medium-sized websites, they often cannot afford the high costs of network development, server management and maintenance, so they usually use lightweight PHP technology to manage and control their website's infrastructure. Therefore, how to determine domain name jump to PHP has become one of the skills that developers must learn.

In the actual website construction process, developers need to determine whether a domain name will jump to a PHP page. This situation usually occurs when there are multiple pages on a domain name, and developers need to jump to different pages based on different domain names. At the same time, when actually accessing the website, if the URL requested by the user does not exist, then we can jump to a 404 page based on the domain name visited, prompting the user that the page does not exist.

So in actual operation, how to judge whether the domain name jumps to the PHP page?

First we need to use PHP's built-in function to obtain the URL address currently being accessed, such as:

$url=$_SERVER['REQUEST_URI']

where $_SERVER['REQUEST_URI'] is the PHP server global variable. This variable uses To obtain the URI submitted by the client. Next we can do some processing based on this value:

if (endsWith($url, ".php")) {
    // URL跳转至PHP页面
} else {
    // URL不是一个PHP页面
}

In the above code, endsWith() is a custom function used to determine whether the current page ends with ".php". The implementation is as follows:

function endsWith($haystack, $needle) {
    $length = strlen($needle);
    if ($length == 0) {
        return true;
    }
    return (substr($haystack, -$length) === $needle);
}

This function is very simple. It first detects the length of $needle. If it is 0, then we think that the character exists on $haystack. Next, we need to determine whether $needle happens to be a segment at the end of the $haystack string. If so, then the endsWith() function returns true, indicating that the current URL jumps to a PHP page. Otherwise, it will return false, indicating that the URL does not jump to the PHP page.

In addition to the above methods, if we need professional PHP technical support, we can use some practical PHP tools and libraries, such as cURL, Snoopy, YUICompressor, etc. However, if you simply need to jump to a PHP page, then using the above endsWith() function is enough.

In summary, how to determine the domain name to jump to the PHP page is one of the problems that web developers often encounter in their daily development. In order to solve this problem, we can use some basic PHP syntax, such as the $_SERVER['REQUEST_URI'] global variable, and the customized endsWith() function. I believe these can help developers better implement website management and control.

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