opcode

In this section, we insert data to look at the data flow, so that the students, know how this permission table interaction is a process, lest everyone in the fog in the fog to go in the day after tomorrowFirst I'll explain some of the tables,

PHP autoload mechanism details (1) autoload mechanism Overview When using the php oo mode to develop a system, we usually get used to storing the implementation of each class in a separate file, which makes it easy to reuse classes, at the same time,

Introduction to PHPPHP is a generic server-side scripting language, which is used primarily for web development to implement dynamic Web pages, and is one of the first server-side scripting languages to implement scripts embedded in HTML source

Preface: The foreach structure is introduced in php4, which is a simple way to traverse arrays. Compared with the traditional for loop, foreach can more easily obtain key-value pairs. Before php5, foreach can only be used as an array; after php5,

PHP autoload mechanism details(1) autoload mechanism OverviewWhen using the php oo mode to develop a system, we usually get used to storing the implementation of each class in a separate file, which makes it easy to reuse classes, at the same time,

PHP is simple, but mastering is not an easy thing to do. We have to know how it works in addition to using it. PHP is a dynamic language for web development. Specifically, it is a software framework that implements a large number of components in

Python byte codeWe know that the Python source code compiles the source code into a sequence of bytecode before execution, and the Python virtual machine performs a series of operations based on these bytecode to complete the execution of the Python

PHP is a dynamic language for web development. Specifically, it is a software framework that implements a large number of component modules in the C language. is a powerful UI framework.In short, PHP Dynamic language execution process: After getting

Speaking of PHP's operating mechanism to introduce the PHP module, PHP has a total of three modules: the kernel, Zend engine, as well as the expansion layer, the PHP kernel is used to handle requests, file flow, error handling and other related

PHP Service Caching Optimization principle Nginx the PHP program request to the fcgi of parsing PHP based on the extension or filtering rules, that is, the PHP-FPM process Cache operation code (opcode) Opcode,php compiled

Now more and more based on PHP Web site, there are many mature CMS program to facilitate the use. After the site's traffic increases, the server's requirements for CPU and memory are getting higher. It is not advisable to increase the cost of

Machine language We just need to focus on a few concepts: 1. The machine language instruction has the operation code (OP) and the address code two parts to compose|_____________op_______________|__d__|__w__| |_____________op_______________|__s__|__

In the development process, the return value type of the function should be invariant, but PHP is a weakly typed language. So PHP does not have this kind of syntax verification, because of this, caused a lot of pits. For example, the following code:

With the privilege of participating in the 2015 PHP Technology Summit (Phpcon), it was exciting to hear about Xinchen's new features and performance optimizations for PHP7. Bird Brother is the most authoritative PHP experts, his share has a lot of

The result of code compiling from local machine code to bytecode, is a small step in the development of storage format, but it is a big step in the development of programming language. Computers only know 0 and 1, so our program needs to be

In the previous article we have introduced the Source Code analysis tool installation, configuration and debugging methods, this article we will describe the PHP source directory structure. I. Catalogue overviewAs php-7.0.12 An example, read

Through the study of the previous article, we have a general understanding of PHP knowledge, such as PHP is open source, free, suitable for web development of the service-side scripting language, suitable for web site development, PHP is an

Look at the following example: Copy Code code as follows: $array = Array (1,2,3); function Add (& $arr) { $arr [] = 4; } Add (@ $array); Print_r ($array); /** At this point, the $array has not changed, the output:

What is the principle of the exception mechanism of PHP? What is the final zend_handle_exception of each OP array that can be executed independently in PHP? Let's start with a question, last week, Blue5tar asked a question: "For the following code,

What's an APC?Alternative PHP cache (APC) is a valid open source Cache tool for PHP, and he is able to cache opcode PHP intermediate code.PHP APC provides two kinds of caching functions, namely cache opcode (target file), we call it