Get your PHP engine running at full speed_PHP Tutorial

As a popular web programming language, PHP's biggest advantage is speed.
PHP4 has done a very good job in this regard, and you can hardly find a faster scripting language than it. But if your application load is heavy and your bandwidth is relatively small, or there are other bottlenecks that affect your server performance, then you might as well try some of the prescriptions I have prescribed for you to see if they are effective.
1. Code Optimization
When it comes to code optimization, you may think of neat and clear code, but this is not the meaning of this article, because if you want to seek speed, you must make corresponding adjustments to the PHP source code. Adjustment. Generally speaking, redundant comments are removed to make the code unreadable. But for a programmer with good qualities, this is simply incredible. Fortunately, Zend Technologies has released the Zend optimization engine to help you do this. It's free now, but you must follow the Zend Optimizer license. This product can optimize the intermediate code generated by the engine.
Installing this engine is relatively simple. After downloading the version corresponding to the platform, unzip the compressed file, then add the following two lines to the php.ini file, restart the web server, and you are done.
zend_optimizer.optimization_level=15
zend_extension="/path/to/ZendOptimizer.so"
zend_loader.enable=Off
If it is a Win32 platform, it should be:
zend_optimizer.optimization_level= 15
zend_extension_ts="C:path o endOptimizer.dll"
zend_loader.enable=Off
Ah! That's not a mistake? Why three lines? Actually the third line is optional. Since it seems like turning off zend_loader will improve the speed a bit, it's worth putting this third line into php.ini . It should be noted that the prerequisite for turning it off is that you are not using the Zend encryption program.
2. Buffering
If we want to further improve the speed, we need to consider using buffering technology. There are some alternative solutions, including Zend Cache (beta version), APC, and Afterburner Cache, as well as jpCache, etc.
The above are buffer modules. They store the intermediate code generated by the first request for the .php file in the memory of the web server, and then return the "compiled" version for subsequent requests. Because this reduces disk reads and writes, and all work in memory, this process can significantly improve application performance.
There are many such products readily available, so who should you choose?
Zend Cache is a good commercial product. After loading those large PHP pages for the first time, you will obviously feel the speed increase, and the server will leave more resources. Unfortunately, this product costs money, but in some cases, you don't want to skimp on the money.
Afterburner Cache is a product of Bware Technologies. It is still in Beta version. It seems to be the same as Zend Cashe, but it cannot achieve as good results as Zend Cache, nor can it work with the Zend optimization engine, but it is free. , so I adopted this module.

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