php实现手机验证

<?php
// 数据库连接
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

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

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

// 生成验证码
$code = rand(100000, 999999);

// 发送短信（这里假设使用第三方短信服务）
$phone = $_POST['phone'];
$smsContent = "您的验证码是：$code，请在5分钟内使用。";
// 调用第三方短信服务API发送短信
// sendSms($phone, $smsContent);

// 将验证码存入数据库
$sql = "INSERT INTO verification_codes (phone, code, expire_time) VALUES ('$phone', '$code', NOW() + INTERVAL 5 MINUTE)";
$conn->query($sql);

echo "验证码已发送";

// 验证验证码
if ($_POST['action'] == 'verify') {
    $inputCode = $_POST['code'];
    $result = $conn->query("SELECT * FROM verification_codes WHERE phone = '$phone' AND code = '$inputCode' AND expire_time > NOW()");

    if ($result->num_rows > 0) {
        echo "验证成功";
    } else {
        echo "验证失败";
    }
}

$conn->close();
?>