R Rati Dubey 🎓 Tutor III ⭐ 8.55K Points 📊 PHP Q. How do you check if a key exists in an array? (A) array_has_key() (B) key_exists() (C) in_array() (D) has_key() 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (B) key_exists() Explanation: key_exists() checks if a specified key exists in an array.