[Solved] What is the error in this nested loop PHP code?for ($x = 1; $x for ($y = 1; $y echo $x + $y . ' '; $x++; }} | PHP

PHP - Loops

What is the error in this nested loop PHP code?

for ($x = 1; $x <= 4; $x++) {
  for ($y = 1; $y <= 3; $y++) {
    echo $x + $y . ' ';
    $x++;
  }
}

AThe outer loop variable <code>$x</code> is incorrectly incremented inside the inner loop.

BThe inner loop condition should be <code>$y < 3</code> instead of <code>$y <= 3</code>.

CThe echo statement should concatenate strings instead of adding numbers.

DThere is no error; the code runs correctly.

Step-by-Step Solution

Solution:

Step 1: Analyze loop variables
The outer loop variable $x controls the main iterations.
Step 2: Check increments
Incrementing $x inside the inner loop causes unexpected behavior and skips iterations.
Step 3: Correct increment placement
$x++ should only be incremented in the outer loop control statement.
Final Answer:
The outer loop variable $x is incorrectly incremented inside the inner loop. identifies the error correctly.
Quick Check:
Outer loop variable must not be changed inside inner loop [OK]

Quick Trick: Increment outer loop variable only in outer loop header [OK]

Common Mistakes:

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