[Solved] What will this PHP code output?$x = 5;function foo() { $x = 10; global $x; echo $x;}foo(); — Ans: Error | PHP

PHP - Functions

What will this PHP code output?

$x = 5;
function foo() {
  $x = 10;
  global $x;
  echo $x;
}
foo();

AError

B10

C5

DNothing

Step-by-Step Solution

Solution:

Step 1: Understand variable declaration order
In PHP, declaring a local variable $x = 10; before declaring global $x; causes a fatal error because the same variable cannot be both local and global in the same scope.
Step 2: Recognize error due to conflicting declarations
The code will produce a fatal error due to this conflict.
Final Answer:
Error -> Option A
Quick Check:
Declaring local variable before global causes error [OK]

Quick Trick: Declaring local variable before global causes error [OK]

Common Mistakes:

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