R Rati Dubey 🎓 Tutor III ⭐ 8.55K Points 📊 PHP Q. What is the purpose of the PHP function isset()? (A) Checks if a variable is set and not null (B) Checks if a variable is empty (C) Sets a variable (D) Deletes a variable 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (A) Checks if a variable is set and not null Explanation: isset() returns true if the variable exists and is not null.