(PHP 4 >= 4.3.0, PHP 5)
Get an Apache environment variable as specified by variable.
This function requires Apache 2 otherwise it's undefined.
The Apache environment variable
Whether 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