PHP development of enterprise resource planning (ERP) system to build procurement analysis report function

Title: PHP development of enterprise resource planning (ERP) system to build procurement analysis report function

Introduction:
Enterprise resource planning (ERP) system plays an important role in modern enterprise management. It realizes the optimal allocation and efficient utilization of enterprise resources by integrating information from various departments. In the ERP system, the procurement analysis report function plays an important role in the enterprise's procurement decision-making and cost control. This article will introduce how to use PHP language to develop an ERP system that can generate procurement analysis reports.

1. Overview
Procurement analysis reports refer to statistics and analysis based on corporate procurement data to generate reports to support procurement decisions. Procurement analysis reports usually include purchase amount, purchase quantity, supplier ranking, material inventory and other information. An ERP system with this function can provide enterprise managers with accurate data support, optimize the procurement process, and reduce procurement costs.

2. Database design
When developing an ERP system in PHP, database design is a crucial step. We need to create the following key tables to store purchasing data:

1. Purchase order table (purchase_order): Stores purchase order related information, such as order number, supplier, purchase date, etc.
2. Purchase order details (purchase_order_details): stores the detailed information of each material in the purchase order, such as material number, purchase quantity, purchase unit price, etc.
3. Materials table (materials): stores basic information of materials, such as material number, material name, unit, etc.
4. Suppliers table (suppliers): stores supplier information, such as supplier number, supplier name, contact information, etc.

3. Generation of Procurement Analysis Report
In the process of developing ERP system with PHP, we can generate procurement analysis report through the following steps:

1. Create Report Page: Use HTML and CSS to create a beautiful and easy-to-use report page, including a date picker to select a time range and a button to generate the report.
2. Receive user input: Use PHP to receive the user-selected time range and validate and process the input.
3. Query database: Use PHP to connect to the database, query the purchase order table and purchase order details table according to the time range selected by the user, and obtain relevant data.
4. Statistical data: Use PHP to perform statistics and calculations on the queried data, and generate the data required for procurement analysis reports.
5. Generate reports: Use PHP and HTML to output statistical data in tabular form to the report page.
6. Export reports: To facilitate saving and printing, you can add the function of exporting reports, such as exporting reports in Excel or PDF format.

Code examples:
The following are the main code examples for generating procurement analysis reports in PHP:

<?php

// 连接数据库
$servername = "localhost";
$username = "root";
$password = "password";
$dbname = "erp";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    die("连接数据库失败: " . $conn->connect_error);
}

// 获取用户输入的时间范围
$start_date = $_POST['start_date'];
$end_date = $_POST['end_date'];

// 查询采购订单和采购订单明细表
$sql = "SELECT purchase_order.order_date, purchase_order_details.material_id, purchase_order_details.quantity, purchase_order_details.unit_price
        FROM purchase_order
        INNER JOIN purchase_order_details
        ON purchase_order.order_id = purchase_order_details.order_id
        WHERE order_date BETWEEN '$start_date' AND '$end_date'";
$result = $conn->query($sql);

// 统计数据
$total_amount = 0;
$total_quantity = 0;

while ($row = $result->fetch_assoc()) {
    $total_amount += $row['quantity'] * $row['unit_price'];
    $total_quantity += $row['quantity'];
}

// 生成报表
echo "<table>
        <tr>
            <th>日期</th>
            <th>物料编号</th>
            <th>数量</th>
            <th>单价</th>
        </tr>";

$result = $conn->query($sql);

while ($row = $result->fetch_assoc()) {
    echo "<tr>
            <td>" . $row['order_date'] . "</td>
            <td>" . $row['material_id'] . "</td>
            <td>" . $row['quantity'] . "</td>
            <td>" . $row['unit_price'] . "</td>
         </tr>";
}

echo "</table>";

// 关闭数据库连接
$conn->close();

?>

Conclusion:
Procurement analysis of ERP system by using PHP language With the reporting function, we can enable enterprises to conduct procurement management and cost control more efficiently. Through reasonable database design and code writing, we can easily generate procurement analysis reports and present them to users in tabular form. I hope this article will be helpful to PHP developers who are developing ERP systems.

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