[Solved] Given the variables $user = 'Alice' and $count = 5, which code correctly outputs: Hello Alice, you have 5 new messages. using string interpolation? | PHP

PHP - Output and String Handling

Given the variables $user = 'Alice' and $count = 5, which code correctly outputs:
Hello Alice, you have 5 new messages. using string interpolation?

Aecho "Hello {$user}, you have {$count} new messages.";

Becho 'Hello $user, you have $count new messages.';

Cecho "Hello $user, you have {$count new messages}.";

Decho "Hello $user, you have $countnew messages.";

Step-by-Step Solution

Solution:

Step 1: Check variable interpolation with and without braces
Braces are needed when a variable is followed by alphanumeric characters that could extend the variable name (e.g., $countnew).
Step 2: Analyze each option
A: echo "Hello $user, you have $countnew messages."; treats $countnew as undefined variable (wrong output). B: Single quotes (no interpolation). C: Syntax error inside braces. D: Braces used correctly for safe interpolation.
Final Answer:
echo "Hello {$user}, you have {$count} new messages."; -> Option A
Quick Check:
Braces clarify variables inside strings [OK]

Quick Trick: Use braces {} around variables for safe interpolation [OK]

Common Mistakes:

Using single quotes which prevent interpolation
Incorrect brace placement causing syntax errors
Omitting braces when needed for clarity

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More PHP Quizzes

Given the variables $user = 'Alice' and $count = 5, which code correctly outputs:

Step 1: Check variable interpolation with and without braces

Step 2: Analyze each option

Final Answer:

Quick Check:

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