[Solved] You want to store a user's first name and age in PHP variables and then display them. Which code correctly declares and uses these variables?1. $firstName = "Alice";2. $age = 30;3. echo "Name:... | PHP

PHP - Variables and Data Types

You want to store a user's first name and age in PHP variables and then display them. Which code correctly declares and uses these variables?

1. $firstName = "Alice";
2. $age = 30;
3. echo "Name: $firstName, Age: $age";

ADeclare variables without $ sign and use $ in echo

BUse variables without $ sign in echo: echo "Name: firstName, Age: age";

CDeclare variables with $ and use them with $ in echo as shown

DUse $ only in declaration, not in echo

Step-by-Step Solution

Solution:

Step 1: Declare variables with $ sign
Lines 1 and 2 correctly declare variables $firstName and $age with $ sign.
Step 2: Use variables with $ sign inside double quotes
In PHP, variables inside double quotes are parsed and replaced with their values, so echo "Name: $firstName, Age: $age"; works correctly.
Final Answer:
Declare variables with $ and use them with $ in echo as shown -> Option C
Quick Check:
Variables need $ in declaration and usage [OK]

Quick Trick: Use $ sign in both declaration and usage [OK]

Common Mistakes:

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You want to store a user's first name and age in PHP variables and then display them. Which code correctly declares and uses these variables?