How to use PHP to develop the bill consolidation function of the accounting system

With the advent of the digital age, people's lives are increasingly dependent on electronic devices and the Internet. The accounting system has become one of the important tools for people to manage their finances. In order to improve the efficiency and convenience of the accounting system, developing a bill consolidation function has become an indispensable part. In this article, we will introduce in detail how to use PHP to develop the bill consolidation function of the accounting system and provide specific code examples.

The core idea of ​​the bill merging function is to merge multiple bill information into a new bill. Before implementing the bill consolidation function, we first need to establish an appropriate database structure to store bill information. Suppose our database name is "bill" and there is a billing table "bill_table" containing the fields "bill_id", "bill_amount" and "bill_date". The following is the relevant database table structure definition:

CREATE TABLE bill_table (
bill_id INT PRIMARY KEY,
bill_amount DECIMAL(10,2),
bill_date DATE
);

Next, we need to create a page to consolidate bills. On this page, users can select the bills that need to be merged and click a button to trigger the merge function. In PHP, we can use HTML forms to implement user interface. Here is a simple example of a consolidated billing page:

Bill Merger

账单1:


账单2:

In the above example, the user can enter the bill ID to be merged, and then pass Click the "Consolidate Bills" button to submit the form.

Next, we need to write a PHP script to handle the consolidated bill function. We save this script as "merge_bills.php". The following is the core code to implement the bill consolidation function:

// Connect to the database
$conn = new mysqli('localhost', 'username', 'password', 'bill ');

// Check whether the database connection is successful
if ($conn->connect_error) {

die("数据库连接失败：" . $conn->connect_error);

}

// Get the bill to be merged ID
$bill1 = $_POST['bill1'];
$bill2 = $_POST['bill2'];

// Query and merge bills
$query = "SELECT bill_amount , bill_date FROM bill_table WHERE bill_id IN ($bill1, $bill2)";
$result = $conn->query($query);

if ($result->num_rows > 0 ) {

$total_amount = 0;

while ($row = $result->fetch_assoc()) {
  $total_amount += $row['bill_amount'];
}

// 创建新的账单
$merge_query = "INSERT INTO bill_table (bill_amount, bill_date) VALUES ($total_amount, NOW())";
$conn->query($merge_query);

echo "账单合并成功！";

} else {

echo "未找到相应的账单信息。";

}

//Close the database connection
$conn->close();
?>

In the above example, we first connect to the database and then get the bill ID submitted by the user. Next, we use a SQL query to get the selected bill information from the database and calculate the total amount. Finally, we insert the new billing information into the database and output a prompt message indicating that the merge is successful.

Through the above code examples and instructions, we have introduced in detail how to use PHP to develop the bill consolidation function of the accounting system. Of course, this is just a simple example, and actual development requires further optimization and improvement based on specific needs. Hope this article helps you!

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