apache_getenv(key) does not work on an php cgi installation, in this case rather use $_SERVER["REDIRECT_key"]
(PHP 4 >= 4.3.0, PHP 5, PHP 7)
apache_getenv — Get an Apache subprocess_env variable
$variable
[, bool $walk_to_top = false
] )
Retrieve an Apache environment variable specified by
variable.
This function requires Apache 2 otherwise it's undefined.
variableThe Apache environment variable
walk_to_topWhether to get the top-level variable available to all Apache layers.
The value of the Apache environment variable on success, or FALSE on
failure
Example #1 apache_getenv() example
The example above shows how to retrieve the value of the Apache environment variable SERVER_ADDR.
<?php
$ret = apache_getenv("SERVER_ADDR");
echo $ret;
?>
The above example will output something similar to:
42.24.42.240
apache_getenv(key) does not work on an php cgi installation, in this case rather use $_SERVER["REDIRECT_key"]