PHP MySQL 插入多条数据

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)<?php$servername = "localhost";$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();?>请注意，每个SQL语句必须用分号隔开。实例 (MySQLi - 面向过程)<?php$servername = "localhost";$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($conn);?>实例 (PDO)<?php$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)<?php$servername = "localhost";$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($stmt);}}?>我们可以看到以上实例中使用模块化来处理问题。我们可以通过创建代码块实现更简单的读取和管理。 注意参数的绑定。让我们看下 mysqli_stmt_bind_param() 中的代码：mysqli_stmt_bind_param($stmt, 'sss', $firstname, $lastname, $email);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:





i - 整数d - 双精度浮点数s -字符串b - 布尔值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。