Are you guilty of one of these common PHP mistakes? Refer to this list next time you’re debugging PHP code.

Source: Buggy PHP Code: The 10 Most Common Mistakes PHP Developers Make

10 common mistakes that PHP developers make:

1. Not using proper coding standards: PHP has coding standards, which include naming conventions, function naming, variable naming, etc. Failure to adhere to these standards can make code difficult to read, maintain and debug.
2. Failing to sanitize user input: Failure to sanitize user input can lead to vulnerabilities such as SQL injection, XSS, and other security threats.
3. Using the wrong PHP version: PHP is constantly evolving, and it’s important to ensure that your code is compatible with the version of PHP being used on the server.
4. Not using prepared statements: Prepared statements can help to prevent SQL injection by separating SQL logic from user input.
5. Over-reliance on global variables: Global variables can make code difficult to maintain and debug.
6. Not testing code: Failure to test code can result in bugs and vulnerabilities, which can be difficult to find and fix.
7. Not optimizing code: PHP code can be optimized for speed and efficiency by reducing the number of database queries, minimizing file access, and reducing unnecessary code execution.
8. Not securing sessions: Sessions should be managed carefully, and session hijacking and session fixation attacks should be prevented.
9. Using insecure file inclusion: Insecure file inclusion can lead to vulnerabilities such as remote code execution.
10. Failing to handle errors: PHP errors should be handled properly to avoid exposing sensitive information and to ensure that the application continues to function correctly.