What is the difference between MYSQL and MYSQLI?

Answer 1

i'm sure i've seen a post similar to this before but i can't find it, generally i had the same question.
mysqli is an improved version of mysql in short terms. i was reading the article for it a few days back, here's a line straight from it: "It is quite literally an improved version of its predecessor, MySQL, which was simply a means to manage databases over servers." http://www.differencebetween.net/technology/difference-between-mysql-and-mysqli/

Answer 2

Short answer is mysqli is secured version of mysql from sql injections.