mysql单引号插入问题

INSERT INTO users (name, bio) VALUES ('John''s Doe', 'He said, ''Hello, world!''');

<?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);
}

// 预处理语句
$stmt = $conn->prepare("INSERT INTO users (name, bio) VALUES (?, ?)");
$stmt->bind_param("ss", $name, $bio);

// 设置参数并执行
$name = "John's Doe";
$bio = "He said, 'Hello, world!'";
$stmt->execute();

echo "新记录插入成功";

$stmt->close();
$conn->close();
?>