PHP
HTML
CSS
JavaScript
jQuery
SQL
WordPress
- Tags: PHP Filter
- Categories: PHP Functions, PHP Reference, Reference
Last Updated on January 23, 2024
Quick Reference
The PHP filter_var() function filters a variable with the specified filter.
Output
// checks if $email is a valid email address
Syntax
filter_var(var, filtername, options)
Parameters
Parameter | Description |
---|---|
var | The variable to filter (required) |
filtername | Specifies the ID or name of the filter to use (default is FILTER_DEFAULT, which results in no filtering) |
options | Specifies one or more flags/options to use |
We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.
PHP
HTML
CSS
JavaScript
jQuery
SQL
WordPress
Why 1SMARTchicken?
This site was built and is maintained to benefit my autistic son.
See More →
See More →
Thanks for your support!
PHP Books
All are affiliate links. Thank you for your support!
PHP NOTES:
- When using PHP, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
- Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
Feedback
If you see an error on the page or the code itself is incorrect or incomplete, or just plain wrong, please let us know. We’re always learning. NOTE: we do not sell your information and will not send you spam emails.