<?php

// 假设我们正在创建一个简单的PHP脚本来处理学生数据

// 连接到MySQL数据库

$servername = "localhost";

$username = "root";

$password = "";

$dbname = "student_management";

// 创建连接

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

// 检查连接

if ($conn->connect_error) {

die("Connection failed: " . $conn->connect_error);

}

echo "Connected successfully";

// 创建表结构

$sql = "CREATE TABLE IF NOT EXISTS students (

id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,

name VARCHAR(30) NOT NULL,

age INT(3),

grade VARCHAR(10)

)";

if ($conn->query($sql) === TRUE) {

echo "Table students created successfully";

} else {

echo "Error creating table: " . $conn->error;

}

// 插入示例数据

$sql = "INSERT INTO students (name, age, grade)

VALUES ('张三', 19, '一年级')";

if ($conn->query($sql) === TRUE) {

echo "New record created successfully";

} else {

echo "Error: " . $sql . "<br>" . $conn->error;

}

// 关闭连接

$conn->close();

?>