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I have a problem in my php code. does anyone know how to fix this? Help me please! Warning: A non-numeric value encountered in C:\xampp\htdocs\stock\dashboard.php on line 15
Code:
$totalRevenue = "";
while ($orderResult = $orderQuery->fetch_assoc()) {
$totalRevenue += $orderResult['paid'];
}
</div>
you need to initialize $totalRevenue to 0, not an empty string