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What happens when you use single quotes instead of double quotes for a string containing a variable in PHP?

easy📝 Conceptual Q1 of 15
PHP - Output and String Handling
What happens when you use single quotes instead of double quotes for a string containing a variable in PHP?
AThe variable name is printed literally, not its value.
BThe variable value is printed as usual.
CPHP throws a syntax error.
DThe variable is replaced with an empty string.
Step-by-Step Solution
Solution:

  1. Step 1: Understand string quoting in PHP

    Single quotes treat the string as plain text, so variables inside are not replaced.

  2. Step 2: Compare with double quotes behavior

    Double quotes allow variable interpolation, but single quotes do not.

  3. Final Answer:

    The variable name is printed literally, not its value. -> Option A

  4. Quick Check:

    Single quotes = no interpolation [OK]
Quick Trick: Use double quotes for variable interpolation in strings [OK]
Common Mistakes:
  • Assuming variables interpolate inside single quotes
  • Expecting syntax error with single quotes
  • Thinking variables become empty strings

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