This code shows how to return multiple values from a function in the form of an array and accessing all array values in a list.This is very useful.
The code demonstrates how to use default argument values in a function.
The code demonstrates passing arguments by reference to a function. The changes made to the arguments passed by reference are reflected back.
This code demonstrates how to pass arguments by value in a function in php.
The code demonstrates how to add elements to the beginning of an array.