How Can I Get the Full URL in PHP, Even with .htaccess Masks?

How to Obtain the Complete URL in PHP

To determine the full URL of a web page or application, PHP provides various mechanisms. One commonly employed method is to utilize a combination of $_SERVER['HTTP_HOST'] and $_SERVER['PHP_SELF'], as showcased in the code block mentioned in the original question.

The caveat with this approach arises when masks are implemented in the .htaccess file. These masks can potentially alter the URL displayed in the address bar, rendering it distinct from the actual path of the file on the server. To overcome this issue and accurately retrieve the URL that appears in the browser's navigation bar, consider leveraging the $_SERVER['REQUEST_URI'] variable.

$actual_link = "https://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";

It's important to note that double-quoted strings are fully supported in PHP. To handle both HTTP and HTTPS protocols seamlessly, the following code snippet can be utilized:

$actual_link = (empty($_SERVER['HTTPS']) ? 'http' : 'https') . "://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";

Security Considerations:

Be advised that sanitization and input validation measures are crucial when working with $_SERVER['HTTP_HOST'] and $_SERVER['REQUEST_URI'] due to their potential for manipulation by malicious actors. It's essential to guard against arbitrary values being set for these variables, particularly in security-sensitive contexts.

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