Learn to use PHP to retrieve values submitted by a form. Set default values to prevent errors if a form parameter was omitted.
- [Voiceover] In the last movie,…we added some forms to our project.…When one of those forms is submitted,…the page that receives the form…is going to need to work with the form values.…PHP takes these form values and automatically…assigns them to an associative array…where we can access them.…That array is stored in a super global variable…called $_POST, or dollar-sign, underscore,…and then in all caps P-O-S-T.…Remember, for URLS and links, which were GET requests,…we access the URL parameters using the super global $_GET.…
It makes sense, then, that with forms,…which are POST requests, we would expect to find…the form parameters stored in the super global for $_POST…and PHP puts these values into the $_POST super global…before our page code starts processing,…so they're there right from the start.…But, unlike GET parameters, we do not need to do…any special encoding on form parameters before we send them.…There are no reserved characters…that we need to worry about.…HTML takes care of all of that for us already.…
- Organizing project files
- Including and requiring files
- Working with URL parameters
- Encoding dynamic content
- Modifying headers and page redirection
- Creating forms and processing form data
- MySQL basics
- Using PHP to access database tables
- Creating, reading, updating, and deleting database records with PHP
- Validating data
- Preventing SQL injection
Skill Level Beginner
1. Start a Database-Driven Project
2. Build Web Pages with PHP
3. Headers and Redirects
4. Build Forms with PHP
5. MySQL Basics
6. Use PHP to Access MySQL
7. CRUD with PHP
8. Validate Data with PHP
9. Prevent SQL Injection
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