PHP implements the scheduled sending function of SMS verification code

PHP implements the scheduled sending function of SMS verification codes, which requires specific code examples

With the development of the Internet, SMS verification has become a commonly used security method in various applications. Ways of identifying. When user registration or important user operations are required, using SMS verification codes can effectively prevent malicious registration and account theft. In order to improve user experience, we can implement the scheduled sending function of SMS verification codes, allowing users to receive verification codes within a certain period of time, thus improving user satisfaction.

In this article, we will use PHP language to demonstrate how to implement this function. We assume that there is already an interface for sending SMS messages, and we only need to integrate this interface to send SMS messages. Now let's take a look at the specific implementation steps.

Step 1: Set the sending time
First, we need to set the sending time of the SMS verification code. We can set the sending time of the SMS verification code to be sent 1 minute after the user clicks the Get Verification Code button. In order to achieve this function, we can use the time functions date() and strtotime() in PHP. The code example is as follows:

//设定短信发送时间为1分钟后
$sendTime = date('Y-m-d H:i:s', strtotime('+1 minute'));

Step 2: Generate verification code
Generating verification code is an important step for SMS function. We can use the random number function rand() or mt_rand() in PHP to generate a 6-digit verification code. The code example is as follows:

//生成6位数的验证码
$code = rand(100000, 999999);

Step 3: Save the verification code and sending time
Next, we need to save the generated verification code and sending time to the database or cache to facilitate the user to pass within 1 minute Verification code to verify. We assume that there is a data table named verification_code, which has two fields code and send_time. We can use SQL statements to save the verification code and sending time. into the data table. The code example is as follows:

//将验证码和发送时间保存到数据库
$sql = "INSERT INTO verification_code (code, send_time) VALUES ('$code', '$sendTime')";
mysqli_query($connection, $sql);

Step 4: Trigger sending SMS
Once the verification code and sending time are saved, we need to trigger the sending function of SMS. We can call the SMS sending API interface to achieve this. The code example is as follows:

//调用短信发送API接口
$response = sms_send($mobile, $code);

The sms_send() function here is a simulated SMS sending function, which needs to be replaced with the corresponding SMS sending API interface according to the actual situation.

Step 5: User verification
When the user receives the SMS verification code, the user needs to verify the verification code within 1 minute. We need to verify the verification code entered by the user with the sending time to ensure that the verification code is within the validity period. The code example is as follows:

//用户输入的验证码
$userCode = $_POST['code'];

//根据用户输入的验证码和发送时间从数据库中查询验证码
$sql = "SELECT code, send_time FROM verification_code WHERE code = '$userCode' AND send_time >= NOW() - INTERVAL 1 MINUTE";
$result = mysqli_query($connection, $sql);
if (mysqli_num_rows($result) > 0) {
    //验证成功
    echo "验证码验证通过";
} else {
    //验证失败
    echo "验证码已过期或不正确";
}

Through the above steps, we successfully implemented the scheduled sending function of SMS verification code, and the user can verify through the verification code within 1 minute.

Summary:
In this article, we demonstrate how to use PHP language to implement the scheduled sending function of SMS verification codes. We successfully implemented the scheduled sending function of SMS verification code by setting the sending time, generating verification code, saving verification code and sending time, triggering SMS sending and user verification. I hope this article will help you understand and master this feature.

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