Practical PHP anti-shake technology: avoid repeated submission of data

Practical PHP anti-shake technology: avoid repeated submission of data

In web development, we often encounter scenarios that require users to submit data. If the user clicks the submit button multiple times in a short period of time, the data may be submitted repeatedly, causing unnecessary trouble to the system and users. In order to solve this problem, we can use PHP anti-shake technology to avoid data being submitted repeatedly. This article will give specific code examples to help readers implement PHP anti-shake technology.

The principle of PHP anti-shake technology is to save the submitted data when clicking the submit button, and then within a certain time interval, if the user clicks the button again, it will be judged as a repeated submission. The following is a specific code example:

session_start();

function debounce($key, $time) {
    // 获取最后一次提交的时间
    $lastSubmit = isset($_SESSION[$key]) ? $_SESSION[$key] : 0;
    
    // 判断距离最后一次提交的时间是否大于指定的时间间隔
    if (time() - $lastSubmit < $time) {
        return true; // 重复提交
    } else {
        $_SESSION[$key] = time(); // 更新最后一次提交的时间
        return false; // 非重复提交
    }
}

// 获取提交的数据
$data = $_POST['data'];

// 判断是否为重复提交
if (debounce('submit_key', 3)) {
    echo '请勿重复提交数据！';
} else {
    // 处理提交的数据
    // ...

    echo '数据提交成功！';
}

In the above code, we use $_SESSION to save the time of the last submission. debounce The function accepts two parameters: $key is used to identify different submission actions, and $time specifies the time interval. If the time since the last submission is less than the specified time interval, it is judged as a repeated submission; otherwise, the time of the last submission is updated.

In actual applications, we can call the debounce function in the page where the form is submitted as needed, passing different $key and $timeConfigure anti-shake settings.

In addition to using PHP anti-shake technology, we can also use front-end technology to avoid repeated submission of data. For example, disable the button after clicking the submit button, and then enable the button until the data submission is completed. In this way, even if the user clicks the button multiple times, it will not cause repeated submission problems.

To summarize, PHP anti-shake technology is an effective way to avoid repeated submission of data. By recording the last submission time when submitting data and setting a time interval, users can avoid repeated clicks to a certain extent. At the same time, we can also combine front-end technology to do some interactions on the interface to help users avoid repeatedly submitting data.

I hope the code examples in this article will be helpful to readers in actual development!

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