How to use ID verification in PHP forms to enhance security
With the development of Internet technology, more and more businesses have moved online. At the same time, in order to ensure the security of user information, major websites pay more attention to user identity verification. As a reliable verification method, ID card verification is increasingly favored by major websites. In this article, we will detail how to use ID verification in PHP forms to enhance security for your website.
1. Basic format of ID card
ID card is a unique identity identifier, consisting of 18 digits and 1 digit check code. Among them, the first 17 digits are the identity code of the ID card number, and the last digit is the check code. In the PHP form, we need to authenticate based on the format of the ID card.
2. PHP verification of ID card
In PHP, we can use regular expressions to verify ID cards. The following is a simple PHP function used to determine whether the input ID card meets the specifications:
function is_IDCard($idcard){
if(!preg_match('/^d{17}[0-9xX]$/', $idcard)) {
return false;
}
$parsed = date_parse(substr($idcard, 6, 8));
if (!($parsed['error_count'] == 0 && $parsed['warning_count'] == 0)) {
return false;
}
$sigma = 0;
$coef = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
for ($i = 0; $i < 17; ++$i) {
$sigma += $coef[$i] * $idcard[$i];
}
$mod = $sigma % 11;
$check = '10x98765432';
return strtoupper($idcard[17]) === $check[$mod];
}By calling the above function, we can easily verify whether the input ID card meets the specifications. If the return value is true, it proves that the format of the input ID card is correct, otherwise it is incorrect.
3. ID card verification for PHP forms
In PHP forms, we often need to verify the ID card entered by the user. The following is a simple verification process:
- The user enters the ID number in the form;
- PHP obtains the ID number entered by the user;
- Calls the is_IDCard function Perform ID verification;
- Based on the returned results, determine whether the ID number entered by the user is correct.
The following is an example of a PHP form to demonstrate how to perform ID card verification:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>PHP身份证验证表单</title>
</head>
<body>
<form action="test.php" method="post">
<label for="idcard">请输入您的身份证号码：</label>
<input type="text" name="idcard" id="idcard">
<input type="submit" value="提交">
</form>
<?php
if(isset($_POST['idcard'])){
$idcard = $_POST['idcard'];
if(is_IDCard($idcard)){
echo "<script>alert('身份证验证通过');</script>";
}else{
echo "<script>alert('身份证验证不通过');</script>";
}
}
?>
</body>
</html>With the above code, we can implement ID card verification in the PHP form. If the ID number entered by the user meets the specifications, it will prompt "ID card verification passed", otherwise it will prompt "ID card verification failed".
Summary: ID card verification is an important security method and is widely used in Internet applications. In PHP forms, we can use regular expressions and PHP functions to implement ID verification, thereby improving the security of the website.
The above is the detailed content of How to use ID verification in PHP forms to enhance security. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1386
52
How to use two-factor authentication in PHP forms to improve security
Jun 24, 2023 am 09:41 AM
Nowadays, in the era of digitalization and networking, security has become one of the important factors that cannot be ignored in the Internet world. Especially in business scenarios with high data sensitivity, how to improve the security of websites, applications and user data is particularly important. Using two-step authentication in PHP forms to enhance security is a feasible solution. Two-Factor Authentication (2FA), also known as double authentication and multi-factor authentication, refers to the process where the user completes the regular account password.
How to use regular expressions to verify ID number in golang
Jun 24, 2023 am 09:00 AM
In development, regular expression verification of ID number is a very common requirement. The Go language also has a built-in regular expression library, so we can easily use regular expressions to complete ID number verification. This article will introduce how to use regular expressions to verify ID numbers in golang. 1. Basic rules for ID numbers Before verifying ID numbers, we need to understand the basic rules for ID numbers. Mainland China ID number consists of 18 digits and the last digit may be a number or the letter X. Among them, before
PHP form protection tips: How to prevent repeated form submissions
Jun 24, 2023 am 11:50 AM
When using PHP forms for data submission, the problem of repeated form submission often occurs. This can lead to inaccurate data or, worse, system crashes. Therefore, it is very important to understand how to prevent duplicate submissions. In this article, I will introduce some PHP form protection techniques to help you effectively prevent repeated form submission problems. 1. Add a token to the form Adding a token to the form is a common way to prevent repeated submissions. The principle of this method is to add a hidden field to the form, which contains
How to use PHP forms to prevent CSRF attacks
Jun 24, 2023 am 11:53 AM
With the continuous development of network technology, security issues have increasingly become an issue that cannot be ignored in network application development. Among them, the cross-site request forgery (CSRF) attack is a common attack method. Its main purpose is to use the user to initiate an illegal request to the background by allowing the user to initiate a malicious request in the browser when the user is logged in to the website. This leads to server-side security vulnerabilities. In PHP applications, using form validation is an effective means of preventing CSRF attacks. Add CSRFToken to verify CSRF attacks
How to handle mobile and responsive design in PHP forms
Aug 10, 2023 am 11:51 AM
How to deal with mobile and responsive design in PHP forms. With the popularity and frequency of mobile devices increasing, and more and more users using mobile devices to access websites, adapting to mobile has become an important issue. When dealing with PHP forms, we need to consider how to achieve a mobile-friendly interface and responsive design. This article explains how to handle mobile and responsive design in PHP forms and provides code examples. 1. Responsive forms using HTML5 HTML5 provides some new features that can easily implement responsive forms.
How to handle multilingual input in PHP forms
Aug 10, 2023 pm 09:00 PM
How to handle multi-language input in PHP forms With the development of globalization, multi-language support for websites has become a necessary feature. In PHP development, how to handle multi-language input so that users can enter data in different languages in the form and store and display the data correctly is an important issue that developers need to solve. This article will introduce how to use PHP to handle multi-language input and give corresponding code examples. 1. Set the language setting of the website In the PHP code, we can use setlocale
How to add user operation records to PHP forms to improve security
Jun 24, 2023 am 09:13 AM
With the rapid development of Internet technology, more and more websites use PHP forms to collect user information. However, the risks that come with it are getting higher and higher, because hackers may use the form to capture users' private information or conduct malicious attacks. In order to prevent these risks, we need to add user operation records to PHP forms to improve security. 1. What is user operation record? User operation record is a record of all operations performed by each user when using the system, including logging in, registering, filling out forms, submitting forms, etc. These records can be used to track
Form autofill techniques in PHP
May 24, 2023 am 09:31 AM
With the continuous development of the Internet, forms have become one of the functions we use on our daily websites. Getting users to fill out a form is undoubtedly a tedious task, so it’s necessary to use some tricks to simplify the process. This article will introduce techniques for implementing form autofill in PHP. 1. Use default value When setting the default value of the form, you can use the "value" attribute in the form tag to specify it. Here is an example: <inputtype="text"name=&q
