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PHP and Node.js

PHP vs Node.js: Most Notable Differences

Posted in PHP, Node.js
PHP vs Node.js: Most Notable Differences

Both PHP or Node.js are two of the most widely used server-side technologies. Nonetheless, there are a lot of differences between the two leading backend technologies. While PHP is a programming language, Node.js is a cross-platform JavaScript runtime environment.

Before moving on to discussing the most important differences between PHP vs Node.js, let us first take a brief look at both the technologies.

PHP

Created by Rasmus Lerdorf, PHP made its debut sometime in 1995. Originally, PHP meant Personal Home Page but now it is a recursive backronym for PHP: Hypertext Preprocessor. The open-source, server-side scripting language is developed specifically for web development.

Unlike other popular programming languages, PHP evolved without a written formal specification up until 2014. The original implementation of the programming language acted as the de facto standard up until that point.

Though PHP is a server-side scripting language, it can also be used for other purposes. PHP scripts has a .php extension and contains a combination of CSS, HTML, JavaScript, and even plain text. As of now, PHP is one of the leading programming languages to get a job.

Facebook, Flickr, Wikipedia, Yahoo, and Tumblr are some of the leading names that have been built using the PHP programming language.

Node.js

Developed by Ryan Dahl, Node.js made its first public appearance in May of 2009. With the introduction of Node.js, it became possible to create pure JS applications that can operate outside the web browser environment.

An open-source, server-side JavaScript runtime environment, Node.js is built on top of the Chrome’s V8 JavaScript engine. Nodejs follows an event-driven architecture with a non-blocking I/O capability making it suitable for developing fast and highly scalable applications.

Node.js files has .js file extension and contain pure JavaScript code. GoDaddy, IBM, LinkedIn, Netflix, PayPal, and Walmart are some of the most notable adopters of Node.js.

PHP vs Node.js: The Battle Begins!

To make the comparison between PHP and Node.js easy to understand, we have divided the complete section into various categories:

Application Domain

PHP gets preference over Node.js for usage in applications where there is no frequent interaction between the client and the server side. On the flip side, Node.jsgains the upper hand for applications that require constant client-server interaction.

Best application scenarios for PHP use are:

  • Applications that use LAMP stack in API development
  • Content Management Systems (Drupal and WordPress both use PHP)
  • Developing CPU-intensive applications, such as meteorology apps and scientific apps

Node.js is widely employed for:

  • Creating single-page applications, including individual websites and resume portfolios
  • Developing highly scalable server-side applications (Primarily due to the non-blocking I/O and event-driven model of Node.js)
  • Real-time applications, such as chat apps and video streaming applications

Code Type and Execution Speed

There are two types of programming code:

  • Synchronous: The code is executed on a line by line basis. The next line of synchronous code is executed only when the execution of the previous line of code has been completed
  • Asynchronous: Entire code is executed at the same time

PHP is mostly synchronous with the exception of some APIs that behave in an asynchronous manner. If a previous line of synchronous code has a function that takes much time to execute then the rest of the code have to wait. As such, this increases the overall execution time.

Node.js code, on the flip side, is asynchronous. This means that the JS engine runs through the entire code at once and there is no need for waiting for a function to successfully complete execution. Hence, Node.js can be very fast compared to PHP code.

There is, however, a catch with the asynchronous code. A program can get stuck in callback hell if there are a lot of functions that need to be chained. It requires piping data from one function to the other.

Nonetheless, Node.js has a workaround for this issue. The async/await feature of Node.js enables a block of code to execute like if it was synchronous code.

Database Preference

More often than not, PHP is used with traditional or relational databases to the likes of MariaDB, MySQL, and PostgreSQL. Though there are ways to use NoSQL databases with PHP, doing so is not so frequent in the industry.

Though Node.js works fine with SQL databases, the trend is shifting towards using NoSQL databases, such as CouchDB and MongoDB.

SQL database systems, especially MySQL are prone to SQL injection, cross-site scripting, and other attacks. Though NoSQL injection attacks are a registered vulnerability for NoSQL-based databases, the chances are much lesser than the SQL databases.

This is so because NoSQL databases design philosophy resists such attacks and also the fact that they are newer to the database scene.

Development Stacks

Switching between different environments and programming languages contribute to lessening efficiency while writing the code. Moreover, it can be infuriating at times.

While writing back-end code in PHP, the developer frequently switches between different programming languages. This is due to the fact that PHP is mostly used as a part of the LAMP (Linux, Apache HTTP Server, MySQL, and PHP) stack.

Node.js, on the other hand, typically uses either MEAN (MongoDB, Express.js, AngularJS, and Node.js) or MERN (MongoDB, Express.js, React, and Node.js) stack. The only programming language knowledge required for using the entire stack is JavaScript.

Frameworks

Node.js features a wide variety of frameworks. Derby, Express, and Meteor are some of the most popular frameworks used with Node.js development projects. Additionally, new frameworks for Node.js are coming out every now and then.

There is a galore of great PHP frameworks available to ease and hasten web development. These frameworks assist in building agile, robust, and secure web applications.

Modules

PHP makes use of module installing technologies, most notably:

  • PEAR – A framework and distribution system for reusable PHP components
  • Composer – A tool for dependency management in PHP. Allows the developer to declare and manage the project-dependent libraries

Node.js comes prepackaged with NPM package management system and its registry. It is easy to use and publish than the modules belonging to PHP.

Unlike Node.js, PHP doesn’t come bundled with modules. A developer needs to download and install them manually.

Web server Setup

PHP versions prior to v5.4 required downloading and setting up LAMP and XAMPP servers. However post that, PHP comes bundled with an inbuilt development server.

Node.js, on the other side, comes prepackaged with core modules, including the file system, HTTP, and DNS. These help in developing customized web servers.

Express.js, Koa.js, and Sails.js are some of the most popular Node.js frameworks for empowering Node.js running web servers. Also, each of these can be set up using a mere 4 lines of code at maximum.

All Done!

So, that completes the comparison between PHP and Node.js. Both backend technologies have their distinct advantages and pitfalls over one another. Hence, making the choice between them depends largely on the project requirements.

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Vijay Singh

Vijay Singh

My name is Vijay Singh Khatri, and I enjoy meeting new people and finding ways to help them have an uplifting experience. I have had a variety of customer service opportunities, through which I was able to have fewer returned products and increased repeat customers, when compared with co-workers. Currently working with hackr.io View all posts by the Author

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Zero
Zero

Quotes: "Asynchronous: Entire code is executed at the same time", "there is no need for waiting for a function to successfully complete execution"

This is wrong! (But maybe some day with a kind of quantum computer?)

You can't run every code/functions simultaneously. There some functions, that uses code out of the programming languages scope (I/O for file system, databases, etc) or are just waiting for something. While this functions are doing their job independent from the main code, in mostly every case there are still other functions waiting for those and can only be resumed, until those are finished.

Asynchronous code, to be clear, makes it possible for a single threaded code, to delegate tasks to other programs and is still responsive (not blocked while waiting), while those other tasks are working.
For example Node.js sends a query to a database and while the database is processing that query, Node.js is working on other things. When the database sends its response, a function in Node.js was waiting for it and after the current workings are finished, this function begins to process the response. (And if that processing isn't even an asynchronous thing, no other functions can do anything, until this processing is finished)

Thiyagi
Thiyagi

thanks for the info..

Mikko
Mikko

When people make nodeJS vs PHP comparasion, it really bugs me that they forget about the "real" server totally.
To get node up and running in the production is not easy and is not cheap.
To get php & mysql up and running in production is just to buy 6$/month webserver where everything is ready, MAINTAINED with security updates and all. You can focus on your app, not on maintaining of server and trying to optimize bandwith because node is so slow.

Other thing is, when you do PHP you only need to know PHP
When you do node, you need gazillions of packets, modules, build scripts, etc... and they do break down, so fast

rajani
rajani

Thanks for sharing Very Use ful Blog..

Dev Kumar
Dev Kumar 10 Points

Even we have to download NPM packages in javascript