getenv() is a PHP function used for returning the specific environment variable's value

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Fri Mar 04 2022 17:25:01 GMT+0000 (Coordinated Universal Time)

Saved by @mboljar

<?PHP

getenv("REMOTE_ADDR"); //fetch the current user's IP address

putenv("tmp=usr"); //set the user's value for environment variable

getenv("tmp");

?>

https://www.w3schools.in/php/environment-variables/

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