The document compares Apache/PHP-FPM with Node.js, highlighting that Node.js operates as its own server while PHP requires Apache/PHP-FPM to function in a web environment. It discusses shared syntax elements, the event-driven nature of JavaScript, and the differences in variable handling between the two languages. Additionally, it explains the concept of callback functions in JavaScript and introduces the 'require' module in Node.js for managing code structure and dependencies.

1. APACHE/PHP-FPM VS
NODE.JS BUILT IN
WEB SERVER
Node.js runs as its own server. There is
no need to install third party software
PHP cannot run as a single web server.
Apache/PHP-FPM is must-have thing for
PHP in web environment
Both of them can run along with Nginx –
As a reverse proxy service

2. NODE.JS SIMPLE WEB
SERVER

3. PHP SYNTAX,
VARIABLES,
AND TYPES TO
NODE.JS

4. PHP SYNTAX,
VARIABLES, AND
TYPES TO NODE.JS
Both PHP and Node.js have common
roots in the C language
Both PHP and Node.js have:
+ if else
+ switch, case, and break
+ same conditional operators
+ the same String Literals: ‘ “ n
+ …

5. PHP SYNTAX,
VARIABLES, AND
TYPES TO NODE.JS
Difference:
Both PHP and Node.js have:
+ else if vs elseif
+ var, let, const instead of $
+ Node.js only have indexed array (no
associative arrays. Node.js object is
similar to php associative arrays)
+ Variable scope
+ …

6. CONVERT
BLOCKING PHP
SOURCE CODE
TO NON-
BLOCKING
NODE.JS
SOURCE CODE

7. CONVERT BLOCKING PHP SOURCE
CODE TO NON-BLOCKING NODE.JS
SOURCE CODE
PHP invented as a replacement for CGI
scripts:
+ Single threaded and is a step-by-step
model.
+ Multithread is depended on web server
JavaScript is an event-driven one:
+ Invented for browser work (Netscape
Navigator)
+ Designed for event handling

8. THE WORLD
OF
CALLBACK

9. THE WORLD OF
CALLBACK
A callback function is a function that
provided to another piece of code,
allowing it to be called by that code.
Why use callback function:
+ Javascript is async
+ Keep the flow correct (ex: open / write
/ close)
+ Asynchronous every thing you can
Problem of callback function
+ Complex code style
+ Callback Hell

10. SEPARATE NODE.JS
SOURCE. UNDERSTANDING
NODE REQUIRE

11. SEPARATE NODE.JS SOURCE.
UNDERSTANDING NODE
REQUIRE
+ Fundamental building blocks of the code structure
+ Help organize your code
+ Hide / expose the interface of a component
+ Use Node Require

12. NODE REQUIRE
+ Resolving: To find the absolute path of the file
+ Loading: To determine the type of the file content
+ Wrapping: To give the file its private scope. Give
require / module object to every file
+ Evaluating: This is what the VM eventually does
with the loaded code
+ Caching: So that when we require this file again, we
don’t go over all the steps another time

13. COMPOSER VS
NPM

14. THANK YOU