K Kanak Sharma 🎓 Tutor III ⭐ 6.13K Points 📊 PHP Q. Which PHP extension is commonly used for unit testing? (A) Xdebug (B) PHPUnit (C) Composer (D) PHPCS 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (B) PHPUnit Explanation: PHPUnit is the standard testing framework.