R Ruchi Sharma 🎓 Tutor III ⭐ 9.87K Points 📊 PHP Q. Which one of the following functions will convert a string to all uppercase? (A) struppercase() (B) str_uppercase() (C) uppercase() (D) strtoupper() 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (D) strtoupper()