The SWF Flash functions allow you to create Macromedia Shockwave Flash movies programmatically with PHP using the libswf library.
The swflib library is available from http://reality.sgi.com/grafica/flash/. Unfortunately, there is no active development on libswf and it is closed-source hence any bugs found are difficult to fix.
One problem users may face is that their web server crashes when attempting to generate a SWF file. This is usually due to problems opening the SWF file for writing or problems opening a font file for inclusion in the SWF file. Font files can be in a "fonts" subdirectory under the location of the scripts generating the SWF content or placed in a directory which can be defined using the SWFFONTPATH environment variable.
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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.