search
HomeBackend DevelopmentPHP TutorialComprehensive analysis of the underlying development principles of PHP7: learn the architecture and evolution of the PHP kernel

Comprehensive analysis of the underlying development principles of PHP7: learn the architecture and evolution of the PHP kernel

Comprehensive analysis of the underlying development principles of PHP7: Learn the architecture and evolution of the PHP kernel

PHP is a scripting language widely used in the field of Web development. It is convenient and flexible. Its features make it a common choice among developers. As the latest version of the PHP language, PHP7 has been greatly improved in terms of performance and user experience. To understand the underlying development principles of PHP7, we need to start with its architecture and evolution.

First of all, to understand the underlying development principles of PHP7, you must understand the architecture of the PHP kernel. The PHP core is mainly composed of three components: Zend engine, extensions and language core. Zend engine is the core component of PHP and is responsible for interpreting and executing PHP code. It converts PHP code into bytecode and then executes it through the interpreter. Extensions are plug-ins written to enhance PHP functions and can implement functions such as database connection, image processing, etc. The PHP language core includes the PHP compiler and standard library to handle language-level functionality.

The underlying development principles of PHP7 are different from previous versions. PHP7 uses the new Zend engine-Zend Engine 3.0. Zend Engine 3.0 has significantly improved performance compared to previous versions, mainly by optimizing the memory layout and improving the bytecode execution engine. In addition, it also introduces a Just-in-Time (JIT) compiler, which can compile bytecode into local machine code on the fly to improve execution speed.

Another key part of PHP7’s underlying development principles is memory management. PHP manages memory through reference counters. When a variable's reference count is reduced to zero, that is, when no other variables refer to it, the memory will be released. However, reference counters pose some performance issues because each time a variable reference is modified, the reference counter needs to be updated. To solve this problem, PHP7 introduces a new garbage collector - reference counter mark cleaner. The garbage collector can automatically recycle unreferenced variables, improving the efficiency of memory management.

The evolution of the PHP kernel is also an important part of understanding the underlying development principles of PHP7. PHP was originally developed by Rasmus Lerdorf to handle logs for personal websites. Over time, PHP grew into a scripting language and gained widespread support in the open source community. During its evolution, PHP has gone through many version updates, constantly improving its performance and stability. As an important milestone, PHP7 has made huge progress in improving performance and introducing new features.

To sum up, a comprehensive analysis of the underlying development principles of PHP7 includes an understanding of the PHP kernel architecture and a review of its evolution. By studying the working principles and improvements of the PHP kernel, we can better understand the performance improvements and new features of PHP7. An in-depth understanding of the underlying development principles will help us optimize the performance of PHP applications and better utilize the powerful features of PHP. I hope this article will help readers understand the underlying development principles of PHP7.

The above is the detailed content of Comprehensive analysis of the underlying development principles of PHP7: learn the architecture and evolution of the PHP kernel. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
php怎么把负数转为正整数php怎么把负数转为正整数Apr 19, 2022 pm 08:59 PM

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

php怎么实现几秒后执行一个函数php怎么实现几秒后执行一个函数Apr 24, 2022 pm 01:12 PM

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php怎么除以100保留两位小数php怎么除以100保留两位小数Apr 22, 2022 pm 06:23 PM

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

php怎么根据年月日判断是一年的第几天php怎么根据年月日判断是一年的第几天Apr 22, 2022 pm 05:02 PM

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

php字符串有没有下标php字符串有没有下标Apr 24, 2022 am 11:49 AM

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

php怎么替换nbsp空格符php怎么替换nbsp空格符Apr 24, 2022 pm 02:55 PM

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\&nbsp\;||\xc2\xa0)/","其他字符",$str)”语句。

php怎么判断有没有小数点php怎么判断有没有小数点Apr 20, 2022 pm 08:12 PM

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

php怎么读取字符串后几个字符php怎么读取字符串后几个字符Apr 22, 2022 pm 08:31 PM

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

SublimeText3 Linux new version

SublimeText3 Linux new version

SublimeText3 Linux latest version

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)