New features of PHP: bytecode cache and built-in server

Zend OPcache 1). from PHP5.0// Start , Built in bytecode cache function , be known as Zend OPcache. because PHP It's an explanatory language ,PHP The interpreter performs PHP The script will parse PHP Script code , Generate a series of Zend opcode , Then execute bytecode , Every time the HTTP All requests are like this , It will consume a lot of resources , Use bytecode cache to cache precompiled bytecode , Reduced response time , Reduce the pressure on system resources . Enable Zend OPcache By default ,Zend OPcache It didn't start . If you compile it yourself PHP, When executed, the command must contain the following options ：

--enable-opcache

Compile well PHP after , Must also be in php.ini The document specifies Zend OPcac/【php course _linux Common commands _ Network operation and maintenance technology 】/he The extension path of , As shown below ：

zend_extension=/path/to/opcache.so

PHP After the compilation is successful, it will display Zend OPcache Extended file path . You can find this by using the following command PHP Extended path

php-config --extension-dir

Then use the following code to confirm that the extension is working properly

<?php phpinfo();

To configure Zend OPcache The recommended configuration

opcache.validate_timestamps = 1 // Set to... In the production environment '0' opcache.revalidate_freq = 0 opcache.memory_comsumption = 64 opcache.interned_strings_buffer = 16 opcache.max_accelerated_files = 4000 opcache.fast_shutdown = 1

You can visit PHP See the detailed settings on the official website . Use Zend OPcache 1). The production environment can be set up opcache.validate_timestamps=0. In the development environment, it needs to be set to 1 Built in HTTP The server 1). start-up php -S localhost:4000 -c app/config/php.ini 2). I won't support it .htaccess file . This means that the controller mode is not supported . The front controller is used to forward all HTTP request , Need to pass through .htaccess File or rewrite rule implementation . 3). You can use router scripts to achieve the above functions . But only a small number of URL Rewriting rule php -S localhost:8000 router.php 4). Determine which server to use ：

<?php if (php_sapi_name() === 'cli-server') { //php Built in server } else { // other Web The server }

Special series PHP Special series directory address ： github.com/xx19941215/… PHP About 20 articles are expected to be written in the special series , Mainly our daily PHP Basic knowledge and modern knowledge that are easy to ignore in development PHP Specifications in development 、 Deploy 、 Some practical suggestions for optimization , At the same time, it's right Javascript An in-depth study of language features .

The above is a brief introduction PHP New features of bytecode cache and built-in server , I hope that's helpful , If you have any questions, please leave me a message , Xiaobian will reply to you in time . Thank you very much for your support of script House website