What is the best practice for adding up values in a while loop in PHP?

When adding up values in a while loop in PHP, it is important to initialize a variable outside the loop to store the total sum. Inside the loop, you can update the total sum by adding the current value to the variable. This ensures that the sum is accumulated correctly as the loop iterates through the values.

// Initialize total sum variable
$totalSum = 0;

// Example while loop
while ($condition) {
    // Get current value
    $currentValue = getValue();

    // Add current value to total sum
    $totalSum += $currentValue;
}

// Output total sum
echo "Total sum: " . $totalSum;