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If you are new to PHP or just need to refresh your skills, this is the place to start. This series of tutorials will give you the basic knowledge you will need to create a simple PHP website.

PHP is a reflective programming language originally designed for producing dynamic web pages.[1] PHP is used mainly in server-side scripting, but can be used from a command line interface or in standalone graphical applications. Textual User Interfaces can also be created using ncurses.

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apache_getenv

(PHP 4 >= 4.3.0, PHP 5)

apache_getenv -- Get an Apache subprocess_env variable

Description

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.

Parameters

variable

The Apache environment variable

walk_to_top

Whether to get the top-level variable available to all Apache layers.

Return Values

The value of the Apache environment variable on success, or FALSE on failure

Examples

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

See Also

apache_setenv()
getenv()
Superglobals

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Another Useful functions:


security.apache | ref.apache | install.windows.apache2 | install.windows.apache1 | install.unix.apache2 | function.apache-setenv | function.apache-response-headers | function.apache-reset-timeout | function.apache-request-headers | function.apache-note | function.apache-lookup-uri | function.apache-getenv | function.apache-get-version | function.apache-get-modules | function.apache-child-terminate |


PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. If you are new to PHP and want to get some idea of how it works, try the introductory tutorial. After that, check out the online manual, and the example archive sites and some of the other resources available in the links section.