[Solved] You want to print the sentence: "The total cost is $50" using PHP string interpolation. Which code snippet correctly does this? | PHP

PHP - Output and String Handling

You want to print the sentence:
"The total cost is $50" using PHP string interpolation. Which code snippet correctly does this?

Aecho "The total cost is $50";

Becho 'The total cost is $50';

Cecho "The total cost is \$50";

Decho "The total cost is ${50}";

Step-by-Step Solution

Solution:

Step 1: Understand escaping $ in double quotes
To print a literal dollar sign, escape it with backslash: \$
Step 2: Check each option for correct output
echo "The total cost is $50"; interpolates $50 as an empty variable (outputs "50"). echo "The total cost is \$50";: echo "The total cost is \$50"; escapes dollar sign correctly. echo 'The total cost is $50'; uses single quotes (no interpolation, $ literal). echo "The total cost is ${50}"; uses invalid variable syntax.
Final Answer:
echo "The total cost is \$50"; -> Option C
Quick Check:
Escape $ to print literal dollar sign [OK]

Quick Trick: Escape $ with \$ to print dollar sign inside double quotes [OK]

Common Mistakes:

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