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What does the null type indicate about a variable in PHP?

easy📝 Conceptual Q1 of 15
PHP - Variables and Data Types
What does the null type indicate about a variable in PHP?
AThe variable has no value assigned
BThe variable holds an empty string
CThe variable contains zero
DThe variable is a boolean false
Step-by-Step Solution
Solution:

  1. Step 1: Understand the meaning of null in PHP

    In PHP, null means a variable has no value assigned to it.

  2. Step 2: Differentiate null from other values

    Empty string, zero, and false are actual values, but null means no value at all.

  3. Final Answer:

    The variable has no value assigned -> Option A

  4. Quick Check:

    Null means no value = B [OK]
Quick Trick: Null means variable has no value assigned [OK]
Common Mistakes:
  • Confusing null with empty string
  • Thinking null is zero
  • Mixing null with false

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