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

Built-in HTTP server

<?php
if (php_sapi_name() === &#39;cli-server&#39;) {
 //php内置服务器
} else {
 // 其他Web服务器
}

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