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PHP MySQL 插入多条数据使用 MySQLi 和 PDO 向 MySQL 插入多条数据mysqli_multi_query() 函数可用来执行多条SQL语句。 以下实例向 "MyGuests" 表添加了三条新的记录: 实例 (MySQLi - 面向对象)$servername = "localhost";$username = "username";$password = "password";$dbname = "myDB"; // 创建链接$conn = new mysqli($servername, $username, $password, $dbname);// 检查链接if ($conn->connect_error) { die("连接失败: " . $conn->connect_error);} $sql = "INSERT INTO MyGuests (firstname, lastname, email) VALUES ('John', 'Doe', 'john@example.com');";$sql .= "INSERT INTO MyGuests (firstname, lastname, email) VALUES ('Mary', 'Moe', 'mary@example.com');";$sql .= "INSERT INTO MyGuests (firstname, lastname, email) VALUES ('Julie', 'Dooley', 'julie@example.com')"; if ($conn->multi_query($sql) === TRUE) { echo "新记录插入成功";} else { echo "Error: " . $sql . "<br>" . $conn->error;} $conn->close();
实例 (MySQLi - 面向过程)$servername = "localhost";$username = "username";$password = "password";$dbname = "myDB"; // 创建链接$conn = mysqli_connect($servername, $username, $password, $dbname);// 检查链接if (!$conn) { die("连接失败: " . mysqli_connect_error());} $sql = "INSERT INTO MyGuests (firstname, lastname, email) VALUES ('John', 'Doe', 'john@example.com');";$sql .= "INSERT INTO MyGuests (firstname, lastname, email) VALUES ('Mary', 'Moe', 'mary@example.com');";$sql .= "INSERT INTO MyGuests (firstname, lastname, email) VALUES ('Julie', 'Dooley', 'julie@example.com')"; if (mysqli_multi_query($conn, $sql)) { echo "新记录插入成功";} else { echo "Error: " . $sql . "<br>" . mysqli_error($conn);} mysqli_close($conn); 实例 (PDO)$servername = "localhost";$username = "username";$password = "password";$dbname = "myDBPDO"; try { $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password); // set the PDO error mode to exception $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); // 开始事务 $conn->beginTransaction(); // SQL 语句 $conn->exec("INSERT INTO MyGuests (firstname, lastname, email) VALUES ('John', 'Doe', 'john@example.com')"); $conn->exec("INSERT INTO MyGuests (firstname, lastname, email) VALUES ('Mary', 'Moe', 'mary@example.com')"); $conn->exec("INSERT INTO MyGuests (firstname, lastname, email) VALUES ('Julie', 'Dooley', 'julie@example.com')"); // 提交事务 $conn->commit(); echo "新记录插入成功";}catch(PDOException $e){ // 如果执行失败回滚 $conn->rollback(); echo $sql . "<br>" . $e->getMessage();} $conn = null; 使用预处理语句mysqli 扩展提供了第二种方式用于插入语句。 我们可以预处理语句及绑定参数。 mysql 扩展可以不带数据发送语句或查询到mysql数据库。 你可以向列关联或 "绑定" 变量。 实例 (MySQLi 使用预处理语句)$servername = "localhost";$username = "username";$password = "password";$dbname = "myDB"; // 创建连接$conn = new mysqli($servername, $username, $password, $dbname);// 检测连接if ($conn->connect_error) { die("连接失败: " . $conn->connect_error);} else { $sql = "INSERT INTO MyGuests(firstname, lastname, email) VALUES(?, ?, ?)"; // 为 mysqli_stmt_prepare() 初始化 statement 对象 $stmt = mysqli_stmt_init($conn); //预处理语句 if (mysqli_stmt_prepare($stmt, $sql)) { // 绑定参数 mysqli_stmt_bind_param($stmt, 'sss', $firstname, $lastname, $email); // 设置参数并执行 $firstname = 'John'; $lastname = 'Doe'; $email = 'john@example.com'; mysqli_stmt_execute($stmt); $firstname = 'Mary'; $lastname = 'Moe'; $email = 'mary@example.com'; mysqli_stmt_execute($stmt); $firstname = 'Julie'; $lastname = 'Dooley'; $email = 'julie@example.com'; mysqli_stmt_execute($stmt); }} 我们可以看到以上实例中使用模块化来处理问题。我们可以通过创建代码块实现更简单的读取和管理。 注意参数的绑定。让我们看下 mysqli_stmt_bind_param() 中的代码: 该函数绑定参数查询并将参数传递给数据库。第二个参数是 "sss" 。以下列表展示了参数的类型。 s 字符告诉 mysql 参数是字符串。 可以是以下四种参数:
每个参数必须指定类型,来保证数据的安全性。通过类型的判断可以减少SQL注入漏洞带来的风险。 | ||
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