In some cases, web forms will not submit information properly when URLs are loaded directly into the browser. This makes it important for PHP with MySQL programmers to include code that will detect whether a form submission has been successful. Use this video to learn more about detecting form submissions and what to do when forms are not submitted properly.
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In the previous movie, we learned to create and retreive the values from a web …form, but we ran into an issue. When the form was submitted, our page …worked just fine. But if the URL was loaded directly, …instead of being submitted by the form, then the key values that our code was …expecting to be in the post array weren't there. …In this movie, we're going to talk about how you can detect whether or not a form …has been submitted, so that you can handle this case appropriately. …So, the problem that we have is that we're looking for this key, username, and …it's not there. It doesn't exist in the post array, …because the form wasn't posted. So therefore, it doesn't exist, and we're …getting an error when we try and access it.…
One simple solution to this would be to use is set. …We remember how to do that, so we could do something like this. …We could say if and then is set, no spaces. …Dollar sign post and then username. So if that is set, then set username. …And we can do the same thing for password. …
- 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
Next steps2m 4s
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