PHP - Loops
You want to print all even numbers from 2 to 10 using a PHP for loop. Which code correctly does this?
You want to print all even numbers from 2 to 10 using a PHP for loop. Which code correctly does this?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the goal
We want to print even numbers from 2 to 10 inclusive.Step 2: Check each option
for ($i = 2; $i < 10; $i += 2) { echo $i . ' '; } prints 2 4 6 8, missing 10. for ($i = 1; $i <= 10; $i++) { if ($i % 2 == 0) echo $i . ' '; } loops 1 to 10 and prints only even numbers 2 4 6 8 10 correctly. for ($i = 2; $i < 10; $i++) { if ($i % 2 == 0) echo $i . ' '; } stops at 9, missing 10. for ($i = 0; $i <= 10; $i += 2) { echo $i . ' '; } starts at 0, which is not in the range 2 to 10.Step 3: Choose the best option
for ($i = 1; $i <= 10; $i++) { if ($i % 2 == 0) echo $i . ' '; } is correct and flexible, printing even numbers by checking inside the loop.Final Answer:
for ($i = 1; $i <= 10; $i++) { if ($i % 2 == 0) echo $i . ' '; } -> Option CQuick Check:
Loop 1-10, print if even = for ($i = 1; $i <= 10; $i++) { if ($i % 2 == 0) echo $i . ' '; } [OK]
Quick Trick: Use modulo % to check even numbers inside loop [OK]
Common Mistakes:
- Stopping loop before 10
- Starting loop at 0 when not needed
- Forgetting to check even condition
Master "Loops" in PHP
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