[Solved] You wrote this PHP code:<?php $sum = 10; $sum += 5; ?>But after refreshing the page, $sum is always 15. You want $sum to keep increasing by 5 each time the page loads. What is the problem? | PHP

PHP - Request Lifecycle

You wrote this PHP code:

<?php
$sum = 10;
$sum += 5;
?>

But after refreshing the page, $sum is always 15. You want $sum to keep increasing by 5 each time the page loads. What is the problem?

AYou need to use a loop to increase $sum

BThe += operator does not add values correctly

CYou forgot to declare $sum as global

DPHP resets variables after each script run, so $sum starts at 10 every time

Step-by-Step Solution

Solution:

Step 1: Understand variable reset behavior
PHP clears all variables after each script finishes, so $sum resets to 10 every time.
Step 2: Why $sum does not keep increasing
Because $sum is reinitialized to 10 on each page load, adding 5 results in 15 always.
Final Answer:
PHP resets variables after each script run, so $sum starts at 10 every time -> Option D
Quick Check:
Variables reset each run = D [OK]

Quick Trick: Variables reset each run; use sessions or files to keep values [OK]

Common Mistakes:

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