R Rati Dubey 🎓 Tutor III ⭐ 8.55K Points 📊 PHP Q. What is the use of isset() function? (A) Check if variable is set and not null (B) Delete variable (C) Set variable (D) Create variable 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (A) Check if variable is set and not null Explanation: isset() checks if a variable is set and not null.