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 = newmysqli($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)
$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 = newPDO("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 = newmysqli($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 - 二进制 blob 存储对象
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。