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An overview of PHP application speed
One of the biggest advantages of PHP is obviously its speed. In general, PHP is always fast enough to support dynamic generation of Web content, and many times you can't even find a faster method than it. However, when you have to deal with huge traffic, high-load applications, limited bandwidth, and various other factors that create performance bottlenecks, you may ask yourself if there is anything you can do to make the website run better . Perhaps as long as you add a very inconspicuous free module, your PHP application performance and Web server response speed will be significantly improved. This article discusses how to further improve the performance of PHP applications and give users a better browsing experience. This article explains various technologies to improve PHP application performance in three aspects (code optimization, caching, and content compression), and introduces well-known products in various fields.
Code Optimization
First, let’s take a look at code optimization. Note that the code optimization here does not mean writing the code more beautifully, because this is probably already known and there is no need to discuss it further; in addition, if you have already considered the speed issue, it is likely that you have already made changes to the PHP source code. Made some optimizations. However, some tools can automatically help us complete these complicated tasks, such as Zend Optimizer. Zend Optimizer is available for free from Zend Technologies, but you must agree to its licensing agreement and note that it is not distributed under the GPL. Zend Optimizer obtains the intermediate code generated by Zend Engine runtime compilation and optimizes it, so that the intermediate code has faster execution efficiency.
The installation method of Zend Optimizer is very simple. You only need to download the precompiled version provided for the platform you are using, add the following two lines of code to php.ini, and then restart the web server:
zend_optimizer.optimization_level =15
zend_extension="/path/to/ZendOptimizer.so"
zend_loader.enable=Off
The additional third line of code here is optional. Disabling zend_loader seems to make the Zend Optimizer a little faster, so it's worth adding this line to php.ini. NOTE: You can disable zend_loader only if you are not using the Zend Encoder Runtime.
Caching
If you want to make your huge PHP application have better performance, using caching is also a good way. There are many caching solutions available, including: Zend Cache, APC, and Afterburner Cache.
All these products are "caching modules". When a request for a .php file first occurs, they save the PHP intermediate code in the web server's memory, and then respond to subsequent requests with the "compiled" version. This approach can really improve application performance because it reduces disk access to a minimum (the code has been read and parsed), and the code runs directly in memory, making the server respond to requests much faster. Of course, the caching module will also monitor changes in PHP source files and re-cache the page if necessary, thus preventing the user from getting pages that are still generated by outdated PHP code. Since caching modules can significantly reduce the load on the server and improve the response efficiency of PHP applications, they are very suitable for websites with heavy loads.

http://www.bkjia.com/PHPjc/631794.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/631794.htmlTechArticleAn overview of PHP application speed One of the biggest advantages of PHP is obviously its speed. In general, PHP always has enough speed to support dynamic generation of Web content. Many times you can't even find...