PHP vs JavaScript – Difference Between Them

Key Difference between PHP and JavaScript

  • PHP is a server-side scripting language, whereas Javascript is a client-side scripting language.
  • PHP doesn’t execute within the browser, whereas Javascript executes within the browser.
  • PHP supports databases, whereas Javascript doesn’t support databases.
  • PHP accepts both upper cases and lower case variables, while Javascript doesn’t.
  • When we compare PHP and JavaScript, PHP doesn’t support Objects & Arrays interchangement, whereas JavaScript supports Objects & Arrays interchangement.
Key Difference between PHP and JavaScript
PHP vs JavaScript


Is not fair to compare PHP vs JavaScript, as they both have different purposes for web-site development. PHP is a server-side scripting language while JavaScript is a client-side scripting language. In fact, the most dynamic website is created when we use functions of both these languages together. If PHP is like a paint-brush to paint picture, then JavaScript is a paint-color.

PHP stands for “Hypertext Preprocessor”, is a programming language embedded in HTML that does all sort of things like build custom web content, send and receive cookies, evaluate form data sent from a browser, etc. It is integrated with number of popular databases like Postgre SQL, Oracle, Sybase, SQL, and MySQL. PHP also supports major protocols like IMAP, POP3 and LDAP.

PHP can handle forms, save data to a file, return data to the user, gather data from files, etc.

Example: Let say a website that takes user to view the order status after logging in. By PHP coding, you would send a query to the database that would then output the specific user information based on what information is in the database


While, JavaScript is designed for creating network-centric applications. With JavaScript, web pages will no longer be static HTML and allows the program that interacts with the user, control the browser, and dynamically create the HTML content. The advantage of JavaScript is that it has less server interaction, allowing you to validate user input before sending the page off which means less load on your server and less server traffic. JavaScript allows immediate feedback to the visitors.

Example: When you hover over the menu tab on the web-page, the drop down effect is done through JavaScript.

Note: JavaScript now supports server-side execution via NodeJS

Difference between Javascript vs PHP

Here is the main difference between JavaScript and PHP:

Features Java-Script PHP
Developed by Brendan Eich (1995) Rasmus Lerdorf (1994)
Object-oriented Yes Yes
Easy to use existing code Yes Yes
Server side scripting language No Yes
Client side scripting language Yes No
Accepts both upper case and lower case boolean variable No Yes
Case sensitive to variables Yes Yes
Case sensitive in function Yes No
Objects & Arrays interchangeable Yes No
Requires HTTP to execute Yes Yes
Updates files on server No Yes
Execute with browser window Yes No
Supports framework Yes Yes
Platform Independent Yes Yes
Open Source Yes Yes
Support database No Yes
Memory Management (garbage collection) Yes Yes
Library Yes Yes
Exceptional Handling Yes Yes
Performance Fast Slow
Support of features Less More

PHP vs JavaScript: Repository

Here is the main difference between PHP and JavaScript for repository:

Repository JavaScript PHP
Github 404077 387773
Stack-Overflow 1639397 1207635
Source-Forge 10814 25090

Trend of JavaScript vs PHP

Job trends from shows millions of jobs search for Java-script and PHP from thousands of job sites. It relatively shows the growing and falling trend of the job for both languages in consecutive years.

Trend of JavaScript vs PHP
Job Trends for JavaScript
Trend of JavaScript vs PHP

Job Trends for PHP

Likewise, regional interest of people for JavaScript or PHP are also highlighted over-here. In this PHP vs JS graph, though we can see the fall of interest of JavaScript versus PHP languages over the period of time due to introduction of new languages, JavaScript still remains on top of PHP.