M Mr. Dubey 🎓 Coach ⭐ 104.48K Points 📊 PHP Q. Which PHP function checks if headers are already sent? (A) headers_sent() (B) headers_exists() (C) is_header_sent() (D) header_status() 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (A) headers_sent() Explanation: headers_sent() checks if output has started.