php vs 其他语言
PHP vs JavaScript 什么是PHP? PHP代表超文本预处理器,它是一种开源脚本语言。它是服务器…
PHP vs JavaScript
什么是PHP?
PHP代表超文本预处理器,它是一种开源脚本语言。它是服务器端脚本语言,是用于创建动态和交互式网站的强大工具。
PHP是一种解释型语言,因此不需要编译。它是专门为在服务器上执行的服务器端脚本而设计的。PHP可以轻松地嵌入HTML文件。
注意:PHP主要用于开发服务器端应用程序。
它具有以下优点:
- 可以在Windows,Linux,UNIX,Solaris等不同平台上执行PHP代码。
- 它易于使用和学习。
- PHP是一种开源语言,这意味着它是免费提供的。
通常,PHP是廉价,跨平台,快速且可靠的Web开发应用程序。
什么是JavaScript?
JavaScript是一种客户端脚本语言。它旨在创建以网络为中心的应用程序。JavaScript是一种轻量级且区分大小写的语言,具有面向对象的功能。
我们可以使用HTML设计网页,但不能运行任何逻辑(如算术运算,检查任何条件或循环语句等),因此要在客户端实现此功能,就需要JavaScript。
JavaScript还具有以下优点:
- JavaScript非常快,因为JavaScript代码可在客户端浏览器中立即执行。
- JavaScript可以轻松嵌入HTML,AJAX和XML 。
- JavaScript支持所有现代浏览器,并且在所有浏览器上都提供相同的结果。
- 如果用户忘记输入一些详细信息,它会立即向用户提供反馈。
PHP和JavaScript之间的区别
PHP和JavaScript都用于不同的目的。如前所述,PHP是服务器端脚本,而JavaScript是客户端脚本。以下是PHP和JavaScript之间的一些区别:
PHP | JavaScript |
---|---|
PHP is a server-side scripting language. | JavaScript is a client-side scripting language. |
PHP performs all the server-side functions like authentication, building custom web content, handling request, etc. | JavaScript is designed to create an interactive web application without interacting with the server |
PHP can combine with HTML only. | JavaScript can combine with HTML, AJAX and also with XML. |
PHP is used for back-end purpose only. | JavaScript is used for both front-end and back-end. |
PHP is easy to learn. | JavaScript is complex to learn. |
PHP is a multi-threadedlanguage, which means it blocks input/output to do multiple tasks concurrently. | JavaScriptis single-threaded, i.e.,event-driven, which means it never blocks, and everything runs in concurrent order. |
In PHP, the code will be available and viewed after it is interpreted by the server. | A JavaScript code can be viewed Even after the output is interpreted. |
It is synchronous by nature and waits for I/O operation to execute. | JavaScript is asynchronous by nature and does not wait for I/O operation to execute. |
什么是HTML?
HTML代表用于创建网页的超文本标记语言。它基本上用于创建静态网页,但可以与CSS,JavaScript和PHP集成。
HTML不是编程语言,因为它是基于标记的语言。尖括号<>用于表示HTML元素或标签。
- HTML非常容易学习和实现。
- 它不是区分大小写的语言。
- 我们可以在任何文本编辑器(如Notepad,Notepad ++,Edit plus等)上编写HTML代码。
- HTML与平台无关,因此可以在不同的平台上执行。
- 它允许程序员在网页上添加颜色,音频,视频和图像。
PHP和HTML之间的区别
PHP | HTML |
---|---|
PHP is a server-side programming language. | HTML is a client-side scripting language. |
PHP is used in backend development, which interacts with databases to retrieve, store, and modify the information. | HTML is used in frontend development, which organizes the content of the website. |
PHP is used to create a dynamic website. The output will depend on the browser. | HTML is used to create a static website. The output of static website remains the same on each time. |
PHP can manipulate the data. | It cannot manipulate the data. |
PHP code executes on web servers like Apache web server, IIS web server. | HTML code executes on web browsers like Chrome, Internet Explorer, etc. |
PHP is scripting language. | HTML is a markup language. |
PHP7.3 is the latest version of PHP. | HTML5.2 is the latest version of HTML. |
PHP is also easy to learn but not as simple as HTML. | HTML is easy to learn. It can easily learn in a very short time. |
PHP files save with .php extension. | HTML files save with .html extension. |
什么是Node.js?
Node.js是一种在服务器上运行的JavaScript编程语言。它有助于创建动态和交互式的网页。Node.js文件以.js扩展名保存,并且仅包含JavaScript代码。它在浏览器外部执行JavaScript代码。
Node.js是一种开放源代码语言,可在Windows,Linux,UNIX和MacOS等不同环境中执行。
Node.js具有许多优点,在下面列出。
- Node.js快速且轻量级。
- 它比PHP更安全。
- Node.js允许我们为客户端和服务器端编写JavaScript代码。
- Node.js具有可伸缩性,即,可以轻松地在垂直和水平方向上扩展应用程序。
- 由于Node.js,JavaScript现在可用于每种浏览器,并且可以在每台服务器上运行。
PHP和Node.js之间的区别
PHP和Node.js都是服务器端脚本语言。因此,他们已经成为彼此的竞争对手。它们必然有一些相似之处,也有一些差异。以下是一些基于其功能和特性的差异。
Features | PHP | Node.js |
---|---|---|
Runtime Environment | PHP is straightforward to install and use at server-side. | PHP is straightforward to install and use at server-side. |
Powered by | PHP is powered by Zend engine. | Node.js is powered by Google’s v8 JavaScript engine. |
Execution | PHP is synchronous except some APIs. | It is totally asynchronous. |
Framework | PHP has many frameworks for easy backend development, such as Laravel, CakePHP, etc. | Node.js also has popular frameworks like Express, Meteor, and DerbyJS, etc. |
Execution Speed | PHP execution speed is slower than Node.js. | Node.js is faster than PHP and lightweight too. |
Web Server | PHP needs Apache web server to execute the code. | Node.js doesn’t need any web server to execute. It runs in its own environment. |
Compatibility with other languages | PHP can contain HTML, JavaScript, CSS, and even plain text. | Node.js can contain only JavaScript. |
Used by | Facebook, Wikipedia, Yahoo, Flickr, and WordPress, etc., are using PHP. | IBM, GoDaddy, NetFlix, LinkedIn, Paypal, and Walmart are the adopters of Ndoe.js. |
Complexity | PHP is simpler to use than Node.js. | Node.js is not too complex, but need more lines of code and callback functions. |
Basic syntax | echo ‘Hello PHP’; | Console.log(‘Hello Node.js’); |
Module | A developer needs to download and install PHP manually. It doesn’t come in bundled with module. | It comes prepackaged with the NPM package management system and its registry. |
Performance | PHP is fast, but slower than Node.js due to the database, third-party request, and file system. | Node.js is faster due to its non-blocking mechanism. |
什么是Python?
Python是一种解释性的,面向对象的编程语言,用于Web开发,软件开发和系统脚本编写等。它是区分大小写的语言。Python的3.7.2是Python的最新版本。
Python是一种通用的高级编程语言。用Python语言编写的程序无需预先编译即可运行。有许多用Python开发的流行应用程序,例如YouTube,Google,DropBox,Instagram,Quora等。
Python不仅是一种网络语言,因为它还用于开发控制台应用程序,移动应用程序,桌面应用程序,IOT应用程序,AI应用程序以及软件测试和黑客攻击等。
以下是Python的几个优点。
- Python是一种动态类型化的语言。
- 它的代码易于编写和调试,因此语法非常简单明了。
- 缩进用于代替Python的花括号。
- 它使用没有声明的变量。
- 我们可以使用Python用最少的代码和更少的时间来解决复杂的问题。
- 我们可以为Windows,Linux,UNIX和Mac OS等不同平台创建Python应用程序。
PHP和Python之间的区别
Python和PHP都是免费的开源语言。Python和PHP之间的主要区别是,Python是一种通用编程语言,PHP,而主要用于web开发。
PHP | Python |
---|---|
PHP is a specialized web development programming language. | Python is a general-purpose programming language. |
PHP does not support multiple inheritance. | Python support multiple inheritance. |
PHP does not provide functional programming. | Python provides functional programming techniques. |
Facebook, Yahoo, Flicker, WordPress are famous applications which are using PHP. | Instagram, YouTube, Google, Pinterest are some popular applications that are using Python. |
PHP has a large number of frameworks. | Python has less number of frameworks. |
PHP is used for web development purpose. | Python is widely used in Data Science, Artificial Intelligence, Machine Learning, and big data analysis, etc. |
There are more than 20 different databases to access. | It does not support database connectivity as widely as PHP. |
PHP offers fewer security features. | Python is more secure than PHP. |
Laravel, Code Igniter, and Symfony are the best frameworks for PHP. | Django, Flask, and jam.py are the famous framework for Python. |
PHP doesn?t perform multiprocessing. | Python performs multiprocessing. |
PHP depends for production on web servers like Apache or Nginx. | Python depends on libraries like Gunicorn, Tornado, Gevent, etc. |
It is more popular than Python, but it is losing traction. | Python is gaining popularity because of its simplicity and ease of use. |
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