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What is the main purpose of using session_start() in PHP?

easy📝 Conceptual Q11 of 15
PHP - Sessions and Cookies
What is the main purpose of using session_start() in PHP?
ATo connect to a database
BTo send output to the browser
CTo begin a session and enable session variables
DTo include another PHP file
Step-by-Step Solution
Solution:

  1. Step 1: Understand what session_start() does

    This function initializes a session or resumes the current one based on a session identifier passed via a cookie or URL.

  2. Step 2: Identify the purpose of session variables

    Session variables store user data across multiple pages, but they only work if a session is started first.

  3. Final Answer:

    To begin a session and enable session variables -> Option C

  4. Quick Check:

    session_start() = start session [OK]
Quick Trick: Remember: session_start() must be called before using $_SESSION [OK]
Common Mistakes:
  • Thinking session_start() connects to a database
  • Using session variables without calling session_start()
  • Confusing session_start() with output functions

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