PHP Functions

"PHP Functions" is a Kata Series authored by donaldsebleung which focuses on the perks and interesting features of PHP functions. It is un-numbered which means that the Kata in this Series is not progressive - one kata in this Series does not necessarily depend on another. This means that as long as you know how to write "Hello World" level programs in PHP, you will probably find any Kata in this Series easy to pick up and complete.

There is, however, one main prerequisite. You must be sufficiently familiar with primitive data types in PHP (strings, booleans, floats, integers) and what they mean. You must also have a basic understanding of how to define a simple function in PHP that may or may not receive a fixed number of arguments. A good indicator that you are ready for any Kata in this Series is if you are able to complete Multiply (8kyu) in PHP without looking at external resources in the process. If you are unable to complete that Kata without researching PHP function syntax then you may have to practice with basic PHP functions until you are familiar with them before continuing on this Kata series.

Certain Kata in this Series may have additional prerequisites. If that is the case, the extra prerequisites will be listed under a Level 2 Heading called Prerequisites in said Kata. Additionally, if a certain Kata in this Series requires a thorough understanding of PHP, the kata may be labelled as [Advanced].