PHP, MySQL: can't explain this undefined index error

Question

I\'m getting an undefined index error with this code:

// Select all bookings
$sql = \"SELECT * FROM booking\";

$result = mysqli_query($con,$sql);

echo \"

        

Answer 1

Put a piece of debug code into your script to proove that the name is correct:-

// Select all bookings
$sql = "SELECT * FROM booking";

$result = mysqli_query($con,$sql);

echo "
";

while ($row = mysqli_fetch_array($result, MYSQLI_ASSOC)) {

    print_r( $row );  // debug code

    // echo $row['custName'] . " - " . $row['roomNb'] . " - " . $row['date'];
    echo $row['custName'];
}