Use PHP environment variables (REDIRECT_)

This guide explains how to use PHP environment variables with the Web hosting which operate in php-fpm.

PHP environment variables (REDIRECT_) are system variables used to store information about HTTP requests and redirects.
They are usually used in web servers to store details of previous queries or redirections that have been made.
The Prefix "REDIRECT_" is often added to the environment variables to indicate that they are related to specific redirections performed by the server.
These variables may contain information such as previous URLs, HTTP methods, or other data related to the client's browsing on the Web server.

Use environment variables

To use PHP environment variables:

Set PHP environment variables in a file .htaccess:
- ```
SetEnv EXAMPLEVARIABLE hello
```
In your PHP file, the name of the variable to call must be prefixed by REDIRECT_:
- ```
<?php getenv('REDIRECT_EXAMPLEVARIABLE');
```

In this example, the result displayed will be Hello..

It is possible to configure environment variables directly from the Manager for your entire website:

Click here in order to access the management of your product on the Manager Infomaniak (Need help?).
Click directly on the nameallocated to the product concerned:
Click on Manage under Advanced Parameters:
Click on the tab PHP / Apache.
Click on the chevron ‍ to develop the game Environmental variables.
Click on the icon ‍ Add.
Enter the variable and its value.
Click on the button for save:

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