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putenv

Name

putenv — Places a value into the server environment.

Synopsis

bool putenv(setting); int setting: Setting to place in environment

Returns

TRUE on success; FALSE on error

Description

Places a variable and its value into the server environment, which can then be accessed by other scripts or programs.

If PHP is running in safe mode, a list of environment variables that can be altered can be set in the PHP initialization file.

Example

Example 1018. Display current PHP version

<?php
putenv("HELLO=world");
echo getenv("HELLO");
?>

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PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). The authors of this book have elected not to choose any options under the OPL. This online book was obtained from http://www.fooassociates.com/phpfer/ and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.