使用PHP开发的资产管理模块在企业资源计划（ERP）系统中的应用

CREATE TABLE assets (
    id INT(11) AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    type VARCHAR(100) NOT NULL,
    purchase_date DATE NOT NULL,
    cost DECIMAL(10, 2),
    status ENUM('Available', 'In Use', 'Damaged', 'Disposed') NOT NULL
);

<?php
// 连接数据库
$conn = new mysqli('localhost', 'username', 'password', 'database_name');
if($conn->connect_error) {
    die('Failed to connect to the database: ' . $conn->connect_error);
}

// 获取资产列表
$sql = "SELECT * FROM assets";
$result = $conn->query($sql);
if($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        echo "<tr>";
        echo "<td>" . $row['name'] . "</td>";
        echo "<td>" . $row['type'] . "</td>";
        echo "<td>" . $row['purchase_date'] . "</td>";
        echo "<td>" . $row['cost'] . "</td>";
        echo "<td>" . $row['status'] . "</td>";
        echo "</tr>";
    }
} else {
    echo "No assets found.";
}
$conn->close();
?>

<form method="GET">
    <input type="text" name="search" placeholder="Search by name">
    <select name="status">
        <option value="">All Status</option>
        <option value="Available">Available</option>
        <option value="In Use">In Use</option>
        <option value="Damaged">Damaged</option>
        <option value="Disposed">Disposed</option>
    </select>
    <button type="submit">Search</button>
</form>

<?php
// 获取搜索条件
$search = isset($_GET['search']) ? $_GET['search'] : '';
$status = isset($_GET['status']) ? $_GET['status'] : '';

// 构建SQL查询语句
$sql = "SELECT * FROM assets WHERE 1=1";
if(!empty($search)) {
    $sql .= " AND name LIKE '%$search%'";
}
if(!empty($status)) {
    $sql .= " AND status = '$status'";
}

// 执行查询
$result = $conn->query($sql);
if($result->num_rows > 0) {
    while($row = $result->fetch_assoc()) {
        // 显示资产信息
    }
} else {
    echo "No assets found.";
}
$conn->close();
?>

// 添加资产
if(isset($_POST['add'])) {
    $name = $_POST['name'];
    $type = $_POST['type'];
    $purchase_date = $_POST['purchase_date'];
    $cost = $_POST['cost'];
    $status = $_POST['status'];

    $sql = "INSERT INTO assets (name, type, purchase_date, cost, status) VALUES ('$name', '$type', '$purchase_date', '$cost', '$status')";
    if($conn->query($sql) === TRUE) {
        echo "Asset added successfully.";
    } else {
        echo "Error adding asset: " . $conn->error;
    }
}

// 编辑资产
if(isset($_POST['edit'])) {
    $id = $_POST['id'];
    $name = $_POST['name'];
    $type = $_POST['type'];
    $purchase_date = $_POST['purchase_date'];
    $cost = $_POST['cost'];
    $status = $_POST['status'];

    $sql = "UPDATE assets SET name='$name', type='$type', purchase_date='$purchase_date', cost='$cost', status='$status' WHERE id=$id";
    if($conn->query($sql) === TRUE) {
        echo "Asset updated successfully.";
    } else {
        echo "Error updating asset: " . $conn->error;
    }
}

// 删除资产
if(isset($_GET['delete'])) {
    $id = $_GET['delete'];

    $sql = "DELETE FROM assets WHERE id=$id";
    if($conn->query($sql) === TRUE) {
        echo "Asset deleted successfully.";
    } else {
        echo "Error deleting asset: " . $conn->error;
    }
}