SQL is a standardized query language for requesting information from a database. You can verify your knowledge by trying to answer a few simple questions.
Sumo is a traditional Japanese sport where wrestler attempts to force another wrestler out of a circular ring. Take this quiz and find out how much you really know about this over 1000 years old sport.
Often in PHP you want the same block of code to run over and over again and instead of adding several almost equal lines, you can use loops to perform this task much easier.
