Introduction to PHP bytecode caching and built-in server
This article mainly introduces the new features of PHP, bytecode caching and built-in server related information. Friends in need can refer to it
Zend OPcache
1). Starting from PHP5.0, there is a built-in bytecode cache function called Zend OPcache. Because PHP is an interpreted language, when the PHP interpreter executes a PHP script, it will parse the PHP script code, generate a series of Zend opcodes, and then execute the bytecode. This is the case for every HTTP request, which consumes a lot of resources and uses bytecodes. Section code caching can cache pre-compiled bytecode, reducing response time and reducing pressure on system resources.
Enable Zend OPcache
By default, Zend OPcache is not started. If you compile PHP yourself, the command must include the following options when executing:
--enable-opcache
After compiling PHP, you must also specify the extension path of Zend OPcache in the php.ini file , as shown below:
zend_extension=/path/to/opcache.so
After PHP is compiled successfully, the file path of the Zend OPcache extension will be displayed immediately. You can use the following command to find the path of this PHP extension
php-config --extension-dir
Then use the following code to confirm that the extension is running properly
<?php phpinfo();
Configuring Zend OPcache
Recommended configuration
##
opcache.validate_timestamps = 1 //在生产环境中设为'0' opcache.revalidate_freq = 0 opcache.memory_comsumption = 64 opcache.interned_strings_buffer = 16 opcache.max_accelerated_files = 4000 opcache.fast_shutdown = 1
Use Zend OPcache
1). The production environment can set opcache.validate_timestamps=0. In the development environment, it needs to be set to 1Built-in HTTP server
1). Start php -S localhost:4000 -c app/ config/php.ini2). .htaccess files are not supported. means controller mode is not supported. The front-end controller is used to forward all HTTP requests, which needs to be implemented through .htaccess files or rewrite rules. 3). You can use router scripts to achieve the above functions. However, only a small number of URL rewriting rules are supported php -S localhost:8000 router.php4). Determine which server is used:<?php if (php_sapi_name() === 'cli-server') { //php内置服务器 } else { // 其他Web服务器 }
Special Series
PHP Special Series Directory Address: github.com/xx19941215/…The PHP Special Series is expected to write about twenty articles, mainly It summarizes the basic knowledge that is easily overlooked in our daily PHP development and some practical suggestions on standardization, deployment, and optimization in modern PHP development, as well as an in-depth study of the characteristics of the Javascript language.The above is the detailed content of Introduction to PHP bytecode caching and built-in server. For more information, please follow other related articles on the PHP Chinese website!

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