[Solved] What does the global keyword do in PHP? — Ans: It allows a function to access variables defined outside its scope. | PHP

PHP - Functions

What does the global keyword do in PHP?

AIt deletes a variable from the global scope.

BIt creates a new local variable inside the function.

CIt makes a variable constant and unchangeable.

DIt allows a function to access variables defined outside its scope.

Step-by-Step Solution

Solution:

Step 1: Understand variable scopes in PHP
Variables defined outside functions are in the global scope and not accessible inside functions by default.
Step 2: Role of the global keyword
The global keyword inside a function tells PHP to use the variable from the global scope instead of creating a new local one.
Final Answer:
It allows a function to access variables defined outside its scope. -> Option D
Quick Check:
global keyword = access outside variables [OK]

Quick Trick: Global lets functions use outside variables directly [OK]

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What does the global keyword do in PHP?