what opcode

Brief introductionZend Opcache, formerly known as Zend Optimizer + (Zend o+), was renamed Opcache in mid-March 2013. It provides faster PHP execution through opcode caching and optimization. It stores precompiled script files in shared memory for

The cross-platform nature of Java because it has virtual machines for different platforms. 1.2 Java Virtual machine The main task of the Java Virtual machine is to load the class file and execute the bytecode. As you can see from the figure below,

Transfer from the Internet: (1) Overview of autoload mechanismWhen developing a system using the OO pattern in PHP, it is often customary to store implementations of each class in a separate file, which makes it easy to reuse classes and

There are two types of data sources in PHP: 1. From the Code For variables in the code (that is, the direct amount), the variable assignment/assignment is active in the executor at compile time, and is destroyed during the request

Realization of obtaining relevant data in method interception If you don't understand my last article, please step back and run it as you go, and in the process of running you will deepen theUnderstanding of the program. This article mainly uses

GNU as compilation syntaxThe GNU assembler syntax uses the AT/T assembly and the syntax of Intel Assembler is mainly the following differences: The immediate operand in the/T assembly is preceded by a ' $ ', the register operand is preceded

A Java Virtual machine (JVM) is an imaginary computer that can run Java code. As long as the interpreter is ported to a specific computer based on the JVM specification description, any compiled Java code can be guaranteed to run on that system.

Blockchain Enthusiast (qq:53016353) #数字货币创世块留言 This is widely circulated in Nakamoto in the digital money creation block Coinbase write down "The Times 03/jan/2009 Chancellor on brink of second bailout for banks" This sentence is the first page of

TCP/IP, WebSocket and MQTT According to the OSI network layering model, IP is the Network layer protocol, TCP is the Transport Layer protocol, and HTTP and Mqtt are the application layer protocols. Between the three, TCP is the protocol for HTTP

This article mainly introduces how to deeply parse the foreach statement in PHP to control the array loop. It is the basic knowledge in PHP beginners. If you need it, refer This article mainly introduces how to deeply parse the foreach statement in

PHP optimization details. These techniques collected by the author have a wide range of sources, and the integrity cannot be guaranteed. These optimization techniques were not tested due to a large number of results. You can test the skills yourself

When developing a system using the PHP OO model, it is often customary to store the implementation of each class in a separate file, which makes it easy to reuse the classes and facilitate future maintenance. This is also one of the basic ideas of

PHP AutoLoad Mechanism detailed(1) AutoLoad mechanism overviewWhen developing a system using the PHP OO model, it is often customary to store the implementation of each class in a separate file, which makes it easy to reuse the classes and

PHP kernel exploration: the Zend virtual machine has learned that the execution process of a PHP file on the server side includes the following two major processes: Hand the file to be executed by the php program. after the php program

PHP AutoLoad Mechanism detailed (1) AutoLoad mechanism overview When developing a system using the PHP OO model, it is often customary to store the implementation of each class in a separate file, which makes it easy to reuse the classes and

I remember the question mentioned above, and I mentioned it in a few words. Why do I have to talk about it again? Well, this is the case. When I read an assembly, I suspect that the above statement is wrong. Want to know if it is his assembly

In section 1.2 we have written a vulnerable program that can control its EIP through the input, this section, we want to let Example_2 run our MessageBox. And look at example_2:/************************************************************************

1. HCI Layer Protocol Overview:Host Controller Interface (HCI) is used to communicate the host and module. Host is usually pc,module is connected to a Bluetooth Dongle on the PC in various physical connection forms (Usb,serial,pc-card, etc.). At the

When developing a system using the PHP OO model, it is often customary to store each class's implementation in a separate file, which makes it easy to reuse the classes and facilitate future maintenance. I. Overview of the AUTOLOAD mechanismWhen

PHP optimization details, php optimization details. PHP optimization details, php optimization details I collected these skills from a wide range of sources, integrity cannot be guaranteed. These optimization techniques were not tested due to a