When you declare a variable in PHP, you don’t need to define its type – you just declare it. If variables are used as part of a comparison, in order to compare them, PHP needs to guess what those variables represent. After making this guess, PHP will convert the variables to some common data type to then perform the actual comparison. This can result in unexpected behaviour, which as we’ve seen before and from a security is perspective is almost always a bad idea. 🏆 The 247CTF channel is dedicated to teaching Capture The Flag fundamentals. If you want to improve your technical skills and succeed in Capture The Flag competitions, make sure to subscribe! 🏁 The 247CTF is a free Capture The Flag learning environment where you can improve your technical skills by solving challenges and recovering flags. You can join now for free at 📺 Subscribe for more Capture The Flag videos! 🏆 Solve CTF Challenges ➝ 🐦Stay up to date ➝ 🥰 Support the 247CTF ➝ 💬 Discuss and learn ➝ 📌Free flag ➝ 247CTF{9719c5ddf317154473d334f47a77ac6a} 📝 Icons made by Freepik & Monkik from 🚨 247CTF’s channel videos are intended for educational purposes only. Methods and techniques discussed are not to be used for illegal activities against unauthorised systems.