[Solved] Why does PHP require a dollar sign ($) before variable names? — Ans: To distinguish variables from constants and keywords | PHP

PHP - Variables and Data Types

Why does PHP require a dollar sign ($) before variable names?

ATo indicate the variable type explicitly

BTo mark variables as global only

CTo distinguish variables from constants and keywords

DTo make variable names case-insensitive

Step-by-Step Solution

Solution:

Step 1: Understand PHP variable syntax purpose
The $ sign helps PHP identify variables clearly, separating them from constants, functions, and keywords.
Step 2: Analyze options
Only To distinguish variables from constants and keywords correctly explains the purpose of the $ sign. PHP does not use $ to indicate type, scope, or case sensitivity.
Final Answer:
To distinguish variables from constants and keywords -> Option C
Quick Check:
$ sign purpose = distinguish variables [OK]

Quick Trick: Dollar sign marks variables, not types or scope [OK]

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Why does PHP require a dollar sign ($) before variable names?