PHP – convert Vietnamese character between VNI and Unicode

Why I need it? VNI here stands for VNI Encoding, a way to store Vietnamese characters without using Unicode in 1990s ans 2000s. In fact, many Vietnamese old documents used it instead of Unicode. When working with a new web project, a client requires me to build their website with Unicode (of course!) but the … Continue reading PHP – convert Vietnamese character between VNI and Unicode