putenv
PHP function
Edit on GitHub ✎
(PHP 4, PHP 5, PHP 7, PHP 8)
Sets the value of an environment variable
Description
putenv(string $assignment): bool
Adds assignment to the server environment. The environment variable will only exist for the duration of the current request. At the end of the request the environment is restored to its original state.
Parameters
assignmentThe setting, like
"FOO=BAR"
Return Values
Success
Examples
Setting an environment variable
php
<?php
putenv("UNIQID=$uniqid");
?>