You want to sum all odd numbers from 1 to 9 using a PHP for loop. Which code correctly does this?

hard📝 Application Q9 of 15

PHP - Loops

Afor ($i = 1; $i <= 9; $i += 2) { $sum += $i; }

Bfor ($i = 0; $i <= 8; $i++) { if ($i % 2 == 1) $sum += $i; }

Cfor ($i = 1; $i < 9; $i += 2) { $sum += $i; }

Dfor ($i = 1; $i <= 8; $i += 2) { $sum += $i; }

Step-by-Step Solution

Solution:

Step 1: Define loop range for odd numbers
Odd numbers from 1 to 9 means start at 1, end at 9, step by 2.
Step 2: Check which option matches this
for ($i = 1; $i <= 9; $i += 2) { $sum += $i; } uses $i = 1; $i <= 9; $i += 2 which correctly sums odd numbers 1,3,5,7,9.
Final Answer:
for ($i = 1; $i <= 9; $i += 2) { $sum += $i; } -> Option A
Quick Check:
Sum odd numbers with step 2 from 1 to 9 = C [OK]

Quick Trick: Use step 2 starting at 1 for odd numbers [OK]

Common Mistakes:

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