home gear home donate
Search Results For

Libraries book

HTML Library CSS Library JavaScript Library PHP Library


PHP and MySQL JavaScript HTML and CSS Vector and 3D Flash Actionscript Android Dev Miscellaneous


Website Hosting Developer Q+A
Sprite Programming Mastery
Validate Email Addresses With PHP preg_match() and a Regex
Here we use the preg_match() function and regular expression logic to demonstrate how to validate email addresses to make sure they consist of the proper structure for a valid email address. If a proper email address is not given we can send a message back to the user to please supply a valid email address. You can use any regexp that works as there are many email validation regexp examples online. Regular expressions(aka: regex or regexp) give programmers a way to make specific string structure relations through expressions to compare values in the supplied argument in preg_match(). Let's check to see if an email address given in a form is valid or not:
<?php $email = "abc123@lolhaha"; // Invalid email address $regex = "^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$"; if ( preg_match( $regex, $email ) ) { echo $email . " is a valid email. We can accept it."; } else { echo $email . " is an invalid email. Please try again."; } ?>
Home   •   Terms of Use   •   T-Shirts   •   RSS   •   Testimonials   •   Subscribe   •   Classroom Chalkboard   •   Developer Q+A   •   Donate   •   Top ↑
Popular In PHP / MySQL E-Commerce Store Production
Social Network Website Building
Image Upload / Photo Processing
CMS Software Programming
Mass Email Systems
Magic XML Data
Search Programming
Popular In JavaScript JSON Programming
Ajax Programming
Animating Elements
WYSIWYG Programming
Date/Time Programming
DOM Scripting
Object Reference
Popular In HTML Canvas Element
New Form Elements
Audio Element
Video Element
Drag and Drop
Event Handling
Element Grouping
Popular In CSS Custom Font Embedding
Dynamic Fit Backgrounds
Theatre Mode
Box Overlays
CSS Level 1 Properties
CSS Level 2 Properties
CSS Level 3 Properties is a growing educational system packed with video and written material that you can access 24/7 100% free. The focus here in 2014 is spread between five technologies: HTML, CSS, JavaScript, PHP and MySQL. Learn programming theory, database interaction, web design, animation, graphics editing, vector art, 3D modeling, and much more. The educational experience here is a hybrid one offering both high quality video tutorials and code libraries that grow more robust every day. The code libraries are being assembled so that developers can discover all of the building blocks of their favorite languages. The libraries coupled with high quality video tutorials will take you deep down the rabbit hole very quickly. You can also ask questions and get free advice at