[Solved] What is the issue with this PHP code?$total = 5;function addOne() { $total = $total + 1;}addOne();echo $total; | PHP

PHP - Functions

What is the issue with this PHP code?

$total = 5;
function addOne() {
  $total = $total + 1;
}
addOne();
echo $total;

AThe variable <code>$total</code> is automatically global inside functions.

BThe variable <code>$total</code> is correctly incremented inside the function.

CThe function should use <code>static</code> keyword instead of <code>global</code>.

DThe function does not access the global variable; it uses an undefined local variable.

Step-by-Step Solution

Solution:

Step 1: Analyze variable scope
Inside the function, $total is treated as a local variable but is used before initialization.
Step 2: Missing global keyword
To modify the global $total, the function must declare global $total;.
Final Answer:
The function does not access the global variable; it uses an undefined local variable. -> Option D
Quick Check:
Without global, function uses local undefined variable [OK]

Quick Trick: Declare global to access outside variable [OK]

Common Mistakes:

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