PHP를 사용하여 MySQL에서 사용자 정의 트리거, 스토리지 엔진 및 트리거를 작성하는 방법

<?php
$connection = mysqli_connect("localhost", "root", "password");
if (!$connection) {
    die("Connection failed: " . mysqli_connect_error());
}

$query = "CREATE DATABASE my_database";
if (mysqli_query($connection, $query)) {
    echo "Database created successfully";
} else {
    echo "Error creating database: " . mysqli_error($connection);
}

$query = "USE my_database";
mysqli_query($connection, $query);

$query = "CREATE TABLE my_table (
    id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(30) NOT NULL,
    age INT(3) NOT NULL
)";
if (mysqli_query($connection, $query)) {
    echo "Table created successfully";
} else {
    echo "Error creating table: " . mysqli_error($connection);
}

$query = "CREATE TRIGGER my_trigger 
AFTER INSERT ON my_table
FOR EACH ROW
BEGIN
    INSERT INTO my_table_backup (id, name, age) 
    VALUES (NEW.id, NEW.name, NEW.age);
END";
if (mysqli_query($connection, $query)) {
    echo "Trigger created successfully";
} else {
    echo "Error creating trigger: " . mysqli_error($connection);
}

mysqli_close($connection);
?>

<?php
$connection = mysqli_connect("localhost", "root", "password");
if (!$connection) {
    die("Connection failed: " . mysqli_connect_error());
}

$query = "CREATE TRIGGER my_trigger
AFTER UPDATE ON my_table
FOR EACH ROW
BEGIN
    INSERT INTO my_table_audit (id, name, age, date_modified)
    VALUES (OLD.id, OLD.name, OLD.age, NOW());
END";
if (mysqli_query($connection, $query)) {
    echo "Trigger created successfully";
} else {
    echo "Error creating trigger: " . mysqli_error($connection);
}

mysqli_close($connection);
?>

<?php
$connection = mysqli_connect("localhost", "root", "password");
if (!$connection) {
    die("Connection failed: " . mysqli_connect_error());
}

$query = "DELIMITER $$
CREATE PROCEDURE my_procedure()
BEGIN
    SELECT * FROM my_table;
END $$";
if (mysqli_multi_query($connection, $query)) {
    echo "Procedure created successfully";
} else {
    echo "Error creating procedure: " . mysqli_error($connection);
}

mysqli_close($connection);
?>