Common security measures in PHP development
PHP is a programming language widely used in web development. Since PHP is widely used, security issues have become an inevitable problem in the PHP development process. In this article, we will explore the security measures commonly used during PHP development.
- Input validation
Input validation is a crucial security measure during PHP development. Input validation refers to checking that user-supplied data conforms to specific rules. Before receiving data submitted by users, developers should perform data verification to ensure that the data provided by users is legal and safe.
For example, in a login form, developers should perform input validation on username and password. Username should contain only letters and numbers, and should be between 3 and 20 characters in length. Passwords should contain at least one number, one uppercase letter, and one lowercase letter, and should be between 8 and 20 characters in length. Input validation helps prevent malicious users from submitting malicious data.
- Prevent SQL injection attacks
SQL injection attacks are a common form of network attack. You can gain illegal access to the database by entering SQL code in the input box. access permission. For example, an attacker can enter the following SQL code in a query form:
SELECT * FROM users WHERE username = 'admin' OR 1=1;
This query will return records for all users , not just the administrator's records. To prevent SQL injection attacks, developers should use parameterized queries and prepared statements. Using these methods, developers can pass input values as parameters to the query statement, rather than embedding user-entered values into the query statement.
The following is an example of using prepared statements to prevent SQL injection attacks:
$stmt = $pdo->prepare('SELECT * FROM users WHERE username = ?');
$stmt->execute([$username]);
- Prevent cross-site scripting attacks
Cross-site scripting attack (XSS) is a A common method of network attack is for attackers to obtain users' sensitive information by inserting malicious scripts into web pages. For example, an attacker could insert the following Javascript code into a comment form:
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
1663
14
1419
52
1313
25
1263
29
1236
24
Enable 256-bit Bitlocker encryption on Windows 11 for increased security
Nov 26, 2023 am 11:21 AM
Bitlocker is the default encryption technology for Windows operating systems. It is widely used on Windows, but some users prefer third-party solutions such as VeraCrypt. What many users of Bitlocker don't know is that it defaults to 128-bit encryption, even though 256-bit is available. Without going into too much detail about the differences; the core difference between AES 128-bit and 256-bit encryption is the length of the security key. Longer keys make brute force attacks more difficult. While the default is 128-bit, even Microsoft recommends 256-bit for better security. The problem is, most users probably don't know about the weaker defaults or how to change them. First, you might want to know W
Win11 encrypted dns detailed tutorial
Dec 25, 2023 am 10:13 AM
Microsoft previously provided dns encryption services for win11, but many users do not know how to use win11 encrypted dns. In fact, we only need to open the dns settings under network settings. Detailed tutorial on win11 encrypted dns: 1. First enter the disk and find the folder you want to encrypt. 2. Then open "Ethernet" on the right 3. Then find the DNS server allocation below and click "Edit" 4. After changing "Auto (DHCP)" to "Manual", open "IPv4" below 5. After turning it on, enter "8.8.8.8" in the preferred DNS 6. Then change the preferred DNS encryption to "Encryption only (DNS over HTTPS)" 7. After the changes are completed, click "Save" and you will find
Does Win10 Home Edition support folder encryption?
Jan 09, 2024 am 08:58 AM
File encryption aims to implement professional-level encryption of data to more effectively ensure data security! Only by mastering the correct encryption key can the decryption operation be performed, ensuring the security of information assets. However, the file encryption function of Win10 Home Edition does not yet have this feature. Can Win10 Home Edition encrypt folders? Answer: Win10 Home Edition cannot encrypt folders. Tutorial on encrypting files in Windows system 1. Right-click on the file or folder you want to encrypt (or press and hold for a while), and then select the "Properties" function. 2. In the new expanded interface, look for the "Advanced" option. After clicking to enter, remember to check the "Encrypt content to protect data" option located below. 3. After the setting is completed, click "OK" to
How to open filtered duplicate files in Quark
Mar 01, 2024 am 11:25 AM
When using Quark Browser, there is a function to filter duplicate files. Some friends are not very familiar with this. Here I will introduce how to turn on this function. If you are interested, come and take a look with me. 1. First, click "Quark Browser" on your mobile phone to enter the interface, then click and select "Quark Network Disk" in the options in the middle of the page to open and enter. 2. Find "Backup Settings" in the lower part of the Quark network disk interface, and click to open it, as shown in the figure below: 3. Next, on the page you enter, there is a "Filter Duplicate Files", which is displayed behind it There is a switch button. Click the circular slider on it and set it to color to turn on this function. When you continue to back up files, duplicate files will be skipped to save network disk capacity.
How to encrypt the compressed package in winrar-winrar encrypted compressed package method
Mar 23, 2024 pm 12:10 PM
The editor will introduce to you three methods of encryption and compression: Method 1: Encryption The simplest encryption method is to enter the password you want to set when encrypting the file, and the encryption and compression are completed. Method 2: Automatic encryption Ordinary encryption method requires us to enter a password when encrypting each file. If you want to encrypt a large number of compressed packages and the passwords are the same, then we can set automatic encryption in WinRAR, and then just When compressing files normally, WinRAR will add a password to each compressed package. The method is as follows: Open WinRAR, click Options-Settings in the setting interface, switch to [Compression], click Create Default Configuration-Set Password Enter the password we want to set here, click OK to complete the setting, we only need to correct
How to set a password for folder encryption without compression
Feb 20, 2024 pm 03:27 PM
Folder encryption is a common data protection method that encrypts the contents of a folder so that only those who have the decryption password can access the files. When encrypting a folder, there are some common ways to set a password without compressing the file. First, we can use the encryption function that comes with the operating system to set a folder password. For Windows users, you can set it up by following the following steps: Select the folder to be encrypted, right-click the folder, and select "Properties"
Common network communication and security problems and solutions in C#
Oct 09, 2023 pm 09:21 PM
Common network communication and security problems and solutions in C# In today's Internet era, network communication has become an indispensable part of software development. In C#, we usually encounter some network communication problems, such as data transmission security, network connection stability, etc. This article will discuss in detail common network communication and security issues in C# and provide corresponding solutions and code examples. 1. Network communication problems Network connection interruption: During the network communication process, the network connection may be interrupted, which may cause
Complete list of PHP encryption and decryption functions: safe application methods of md5, sha1, base64_encode and other functions
Nov 18, 2023 pm 04:18 PM
Complete list of PHP encryption and decryption functions: safe application methods of md5, sha1, base64_encode and other functions, requiring specific code examples. In the development of network applications, data encryption and decryption is very important. As a popular server-side scripting language, PHP provides a variety of encryption and decryption functions. This article will introduce commonly used functions and their secure application methods, and provide specific code examples. md5 function The md5 function is the most common encryption function that can convert a string of any length into 32 bits
