How can a while loop be used to update multiple rows in a SQL table with different values in PHP?

To update multiple rows in a SQL table with different values using a while loop in PHP, you can fetch the data you want to update from a database, loop through each row, and execute an UPDATE query for each row with the corresponding values. This can be achieved by using a while loop to iterate over the fetched data and dynamically updating the rows with different values in each iteration. 

// Fetch data from the database
$query = "SELECT id, column_to_update FROM your_table";
$result = mysqli_query($connection, $query);

// Loop through each row and update with different values
while ($row = mysqli_fetch_assoc($result)) {
    $id = $row['id'];
    $new_value = // calculate new value based on your logic

    // Update the row with the new value
    $update_query = "UPDATE your_table SET column_to_update = '$new_value' WHERE id = $id";
    mysqli_query($connection, $update_query);
}

// Close the database connection
mysqli_close($connection);

Keywords

PHP while loop SQL table update multiple rows

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