中文字符 mysql

-- 创建数据库时设置字符集
CREATE DATABASE mydb CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- 创建数据表时设置字符集
CREATE TABLE users (
    id INT PRIMARY KEY,
    name VARCHAR(100)
) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

-- 连接数据库时设置字符集
SET NAMES utf8mb4;

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "mydb";

// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);

// 检查连接
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 设置字符集
$conn->set_charset("utf8mb4");

// 插入数据
$sql = "INSERT INTO users (name) VALUES ('张三')";
if ($conn->query($sql) === TRUE) {
    echo "新记录插入成功";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}

$conn->close();
?>