如何在MySQL中使用PHP编写自定义触发器和存储引擎

<?php
// PHP连接到MySQL数据库
$servername = "localhost";
$username = "yourusername";
$password = "yourpassword";
$dbname = "yourdatabase";

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

// 创建触发器
$sql = "CREATE TRIGGER my_trigger AFTER INSERT ON my_table
        FOR EACH ROW
        BEGIN
            -- 在此处编写触发器的逻辑代码
            -- 可以使用NEW关键字引用插入的新行数据
            -- 示例：INSERT INTO log_table (timestamp, message) VALUES (NOW(), NEW.column_name);
        END;";
        
if ($conn->query($sql) === TRUE) {
    echo "触发器创建成功";
} else {
    echo "触发器创建失败：" . $conn->error;
}

$conn->close();
?>

<?php
// PHP连接到MySQL数据库
$servername = "localhost";
$username = "yourusername";
$password = "yourpassword";
$dbname = "yourdatabase";

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

// 创建存储引擎
$sql = "CREATE TABLE my_table (
        id INT(10) PRIMARY KEY AUTO_INCREMENT,
        name VARCHAR(255)) 
        ENGINE=MyISAM;";
        
if ($conn->query($sql) === TRUE) {
    echo "存储引擎创建成功";
} else {
    echo "存储引擎创建失败：" . $conn->error;
}

$conn->close();
?>