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Thread Safety: PHP 5, Apache 2, and Windows
I've been trying to look up thread safety issues with some of my Windows-based Apache / PHP setups, but am coming up short.
Currently, I have a couple non-public web servers running WIndows Server, Apache 2, and PHP 5. The PHP versions that I used were NOT the "non-thread-safe" versions available for download from the PHP site.
#1. With my setup, should I be using the default/standard binaries for Windows, or should I be using the non-thread-safe ones?
#2. I've noticed some glitches over time and wonder if they are the result of using the standard versions instead of the non-thread-safe versions. For example, some scripts that use GD to piece together multiple GIF files sometimes have strange-looking results, as if GD had just glitched. It happens about 1 in 4 times, but the script rarely runs and is not public, so has not been a priority.
I also have a script that calculates the crc32() values of files in a directory. Once in a blue moon, this causes the Apache process to crash. It still SEEMS like Apache is running after the crash, but I usually restart the service, just in case.
Neither of these problems is hardware-specific. They happen on local development Windows XP boxes as well as different servers. The only thing they all have in common is default PHP 5 binaries, Apache 2, and Windows.
(I've also used different minor versions of PHP 5 and Apache 2, although they don't seem to make a difference.)
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by: hernst42Posted on 2007-07-12 at 13:59:19ID: 19476151
1) Using threaded or non-threaded binaries depends of the installation of php. If you use php as cgi use the non-threaded lib. If you use it as apache-module you need the threaded binaries as apache is running in threaded mode on windows.
http://de2.php.net/manual/
And finally, this warning against using a threaded MPM is not as strong for Windows systems because most libraries on that platform tend to be threadsafe.
If you plan to setup a productive server, check Zend Core which comes with a complete setup for apache, windows management tools and support. So if you encounter problem with your php which might result in a show stopper let the support fix the php.
http://www.zend.com/produc