10 Tips to Improve the Performance of PHP Code_PHP Tutorial
The advice in this article covers most PHP code performance issues. If you are working on some small websites or small projects, there are reasons to ignore these suggestions, but when you provide long-term and stable services to a large number of users, you must pay attention. Developers must consider these suggestions from the beginning of the project, it will greatly improve the performance of your website. In PHP, there are usually many ways to achieve the same purpose, but developers usually choose the one they are most familiar with and comfortable to use, but there are some things that must be noted:
1.echo Much faster than print. Both methods will print something on the page, but echo does not return any value, and print returns 0 or 1 on success or failure.
2.include_once is more time-consuming than include. Because it needs to check whether the class you want to include has been included.
3. Be sure to use single quotes instead of double quotes for long paragraph strings. Because double quotes will search for variables in the string. For example: echo ‘This is long string’.$name is much faster than echo ‘This is long string $name’.
4. Do not use for($i=0;$i
5. If the function can be defined as static, then do not define it as a member function. Static functions are better than Member functions are 33% faster.
6. If you can solve the problem without regular expressions, then don't use regular expressions. For example, use str_replace instead of preg_replae. .
7. Try not to use relative paths to include files. Searching for files in relative paths will be done in the current directory, and then searching for files in sequence will be very slow. It is best to define WEB_ROOT first. Such a constant, and then use this constant to include the file
8. The congruent symbol === is faster than the equal == and if(1 == '1′) will return true. == ") will also return true, and when you use the congruent symbol, both if(1 ==='1′) and if(0===") will return false, so when you need to detect something in your program. When using Boolean variables, it is best to use congruent symbols
9. It is best not to use the abbreviation
10. It is best not to use and rely on register_global or magic_quote to read and set yours. You must also be careful when using php.ini.
This article does not cover all aspects of optimization. RockUX will cover it in subsequent articles.
I hope this article will introduce it. , can help you
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