COM objects abstract a group of functions in software into a redistributable binary component that can interface with a system in ways a scripting language can't interface. Developed by Microsoft, COM objects are traditionally used in more commonplace Windows-based programming environments such as Visual Basic and Active Server Pages (ASP). There are slight variations in the implementation between PHP 4.0 and PHP 3.0. Version 4.0 of PHP uses the 'new COM' constructor, whereas version 3.0 uses com_load() . These functions are also available only in Windows versions of PHP.
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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.