PHP를 사용하여 재고 관리 시스템에서 재고 위치 관리 기능 코드를 작성하는 방법

CREATE TABLE warehouse (
   id INT PRIMARY KEY AUTO_INCREMENT,
   name VARCHAR(50),
   capacity INT,
   status TINYINT(1)
);

<?php
$host = "localhost";
$username = "root";
$password = "password";
$dbname = "inventory_management";

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

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

<?php
if (isset($_POST['add'])) {
    $name = $_POST['name'];
    $capacity = $_POST['capacity'];

    $sql = "INSERT INTO warehouse (name, capacity, status) VALUES ('$name', $capacity, 1)";

    if ($conn->query($sql) === TRUE) {
        echo "成功添加库位！";
    } else {
        echo "添加库位失败: " . $conn->error;
    }
}
?>

<?php
if (isset($_GET['delete'])) {
    $id = $_GET['delete'];

    $sql = "DELETE FROM warehouse WHERE id = $id";

    if ($conn->query($sql) === TRUE) {
        echo "成功删除库位！";
    } else {
        echo "删除库位失败: " . $conn->error;
    }
}
?>

<?php
if (isset($_POST['edit'])) {
    $id = $_POST['id'];
    $name = $_POST['name'];
    $capacity = $_POST['capacity'];

    $sql = "UPDATE warehouse SET name = '$name', capacity = $capacity WHERE id = $id";

    if ($conn->query($sql) === TRUE) {
        echo "成功更新库位信息！";
    } else {
        echo "更新库位信息失败: " . $conn->error;
    }
}
?>

<?php
$sql = "SELECT * FROM warehouse";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    while ($row = $result->fetch_assoc()) {
        echo "库位ID: " . $row['id'] . "<br>";
        echo "库位名称: " . $row['name'] . "<br>";
        echo "库位容量: " . $row['capacity'] . "<br>";
        echo "库位状态: " . ($row['status'] ? "可用" : "不可用") . "<br>";
        echo "<a href='edit.php?id=" . $row['id'] . "'>编辑</a> | ";
        echo "<a href='?delete=" . $row['id'] . "'>删除</a><br><br>";
    }
} else {
    echo "暂无库位信息";
}

$conn->close();
?>