Setting default argument values is one way to avoid errors. Using simple assignments, you can set values to be used when null is passed. In this PHP with MySQL series video, you will also learn the difference between passing in null and passing nothing, as well as tips like listing required values first, and optional values and their defaults after.
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We've already learned that the arguments when you call a function must match the …arguments that were used to define the function. …If you define it with three arguments, then you need to provide three arguments …as input. However, there is a way around that, by …setting default argument values. Let's see how. …So we'll open up basic.html. We'll call Save As on that. …And let's call this functions_defaults.php. …Functions default argument values. All right, so to start off with let's …write ourselves a little function. And I'm going to call this function, paint.…
Alright, so function paint and, let me just put the curly braces there. …And this paint is going to take a color as an argument. …The work that this function is going to do is we're going to return a string, …which is the color of the room is, and then we'll have our curly braces with the color. …And then I'll put a period and br tag at the end, followed by the semicolon. …Okay. So now, we know how to call that, right? …You can simply say echo paint and blue. Now, let's bring that up in a window and …
- What is PHP?
- Installing and configuring PHP and MySQL
- Exploring data types
- Controlling code with logical expressions and loops
- Using PHP's built-in functions
- Writing custom functions
- Building dynamic webpages
- Working with forms and form data
- Using cookies and sessions to store data
- Connecting to MySQL with PHP
- Creating and editing database records
- Building a content management system
- Adding user authentication
Skill Level Beginner
PHP with MySQL Beyond the Basicswith Kevin Skoglund10h 26m Intermediate
1. PHP Overview
2. Mac Installation
3. Windows Installation
4. First Steps
5. Exploring Data Types
6. Control Structures: Logical Expressions
7. Control Structures: Loops
8. User-Defined Functions
10. Building Web Pages with PHP
11. Working with Forms and Form Data
12. Working with Cookies and Sessions
13. MySQL Basics
14. Using PHP to Access MySQL
15. Building a Content Management System (CMS)
16. Using Site Navigation to Choose Content
17. Application CRUD
18. Building the Public Area
19. Regulating Page Access
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