使用 PHP 和 MySQLi 对 WHERE 子句日期前后的数据进行排序

Question

I'm a little new to PHP / MySQLi so think doing ok so far, however I am a little stuck.

I want to show the total SUM for OPEN invoices but separate them to show due invoices and overdue / late invoices.

Here are my functions:

function getLateInvoicesTotal() {
    // Connect to the database
    $mysqli = new mysqli(DATABASE_HOST, DATABASE_USER, DATABASE_PASS, DATABASE_NAME);

    // output any connection error
    if ($mysqli->connect_error) {
        die('Error : ('.$mysqli->connect_errno .') '. $mysqli->connect_error);
    }

    $query = "SELECT SUM(`total`) as `total` FROM invoices WHERE invoice_due_date < NOW() AND status = 'open'";

    // mysqli select query
    $results = $mysqli->query($query);

    while($row = $results->fetch_assoc()) {
        $value = $row["total"];
        $value = $value / 100;
        setlocale(LC_MONETARY, 'en_GB.UTF-8');
        $value = money_format("%.2n", $value);
    print $value;
    }  

  // Frees the memory associated with a result
    $results->free();

    // close connection 
    $mysqli->close();
}

function getOpenInvoicesTotal() {
    // Connect to the database
    $mysqli = new mysqli(DATABASE_HOST, DATABASE_USER, DATABASE_PASS, DATABASE_NAME);

    // output any connection error
    if ($mysqli->connect_error) {
        die('Error : ('.$mysqli->connect_errno .') '. $mysqli->connect_error);
    }

    $query = "SELECT SUM(`total`) as `total` FROM invoices WHERE invoice_due_date < NOW() AND status = 'open'";

    // mysqli select query
    $results = $mysqli->query($query);

    while($row = $results->fetch_assoc()) {
        $value = $row["total"];
        $value = $value / 100;
        setlocale(LC_MONETARY, 'en_GB.UTF-8');
        $value = money_format("%.2n", $value);
    print $value;
    }  

  // Frees the memory associated with a result
    $results->free();

    // close connection 
    $mysqli->close();
}

In my table I have 2 columns for dates, invoice_due and invoice_due_date which for example has values 16/01/2017 16/06/2017

Does anyone know how I can modify my 2 functions to collect the data I want for due and overdue invoices? It is working fine showing the amounts I am just stuck with defining them apart.

Answer 1

You are using invoice_due_date in both the query.

If you want invoice_due in one function change the where query from invoice_due_date to invoice_due .