Chapter 3: Arrays and functions in PHP

16 tasks and 1 summary

Learn how to create your own functions and use the built-in ones. We will explore how to use functions to sort, filter, copy, and shuffle arrays. We will finish the shipping status page and display random product listings on the main page of our store.

1. Display all of the products from the order on the page Task

2. Declare and call the function Task

3. Function arguments Task

4. Functions return values Task

5. Passing the product ID to the function Task

6. Calculating the shipping cost Task

7. Optimizing the function Task

8. Built-in functions Task

9. The uasort function and sorting products Task

10. Changing the sorting direction Task

11. The array_slice function and retrieving part of an array Task

12. Determining which products are new arrivals Task

13. The array_filter function and filtering the array Task

14. Combining the arrays Task

15. The array_rand function and obtaining random elements Task

16. The shuffle function and shuffling the array Task

17. Summary of “Arrays and functions in PHP” Summary