apache_getenv

(PHP 4 >= 4.3.0, PHP 5)

apache_getenv — Get an Apache subprocess_env variable

string apache_getenv ( string $variable [, bool $walk_to_top ] )

Get an Apache environment variable as specified by variable .

This function requires Apache 2 otherwise it's undefined.

variable: The Apache environment variable
walk_to_top: 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;
?>

上例的输出类似于：

42.24.42.240