What are the potential pitfalls of using multiple while loops in PHP without affecting the database pointer?

Using multiple while loops in PHP without affecting the database pointer can lead to unexpected behavior or errors, as each loop may try to fetch data from the same result set cursor. To avoid this issue, you can store the fetched data in an array and then iterate over the array in subsequent loops.

// Fetch data from the database
$result = mysqli_query($connection, "SELECT * FROM table");

// Store fetched data in an array
$data = [];
while ($row = mysqli_fetch_assoc($result)) {
    $data[] = $row;
}

// Use the data array in multiple loops
foreach ($data as $row) {
    // Process data in the first loop
}

foreach ($data as $row) {
    // Process data in the second loop
}