This document discusses techniques for minimizing security vulnerabilities in PHP application development. It begins by listing some of PHP's advantages and popularity. It then discusses major security weaknesses like input validation, SQL injection, and file inclusion. It provides 10 techniques for improving security, including validating input data, protecting against XSS and CSRF attacks, proper error handling, using prepared statements to prevent SQL injection, and unit testing code. The conclusion emphasizes the importance of secure PHP application development and testing code throughout the process.