Y Yami Thakur 🎓 Tutor II ⭐ 10.47K Points 📊 PHP Q. Which of the following function converts a string to all uppercase? (A) upper() (B) uppercase() (C) struppercase() (D) strtoupper() 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (D) strtoupper()