Day 7: Useful PHP Functions.

Welcome to the seventh day of your PHP learning journey.

Today you are going to see some PHP core functions.

PHP provides hundreds of functions, and you will use many of them often in your apps.

This list contains just a small selection of the most useful functions, mostly functions for handling text strings, arrays and dates. Don't worry: you are not supposed to memorize them or anything like that. Today's goal is to see how PHP functions work in practice.

By the end of the day, you will have a clear idea of how PHP core functions work in practice and how to use them in your own code.

What you will learn today.

• A list of useful PHP code functions to handle text strings.
• A list of useful PHP code functions to handle arrays.
• A list of useful PHP code functions to handle date and time elements.