[Solved] What does the session_start() function do in PHP? — Ans: It initializes a new session or resumes an existing one. | PHP

PHP - Sessions and Cookies

What does the session_start() function do in PHP?

AIt initializes a new session or resumes an existing one.

BIt destroys all session data immediately.

CIt sets a cookie without starting a session.

DIt encrypts session data automatically.

Step-by-Step Solution

Solution:

Step 1: Understand the purpose of session_start()
This function either creates a new session or continues the current session if one exists.
Step 2: Analyze other options
Destroying session data is done by session_destroy(), not session_start(). Setting cookies or encrypting data is not handled by this function.
Final Answer:
It initializes a new session or resumes an existing one. -> Option A
Quick Check:
session_start() = initializes/resumes session [OK]

Quick Trick: Always call session_start() before accessing $_SESSION [OK]

Common Mistakes:

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