email validation

[dadamssg]

Can someone explain the basic theory of how when registering for a site and email validation works? i want to include this into mine but want to know the easiest way possible. thanks

[Maq]

1) Use regex to check if it's a valid name.

2) If the email is a valid name, send a confirmation email with some sort of unique hash for the user to click on and send a request back to your server.

 

There are plenty of tutorials online and threads on this forum about this.  Don't reinvent the wheel, come back with specific questions...

[gevans]

Hey, I was just using a regex pattern for email, this is what the function looks like;

 

<?php
function emailCheck($n) {
$pattern = "~^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$~";
if(!preg_match($pattern, $n))
	return FALSE;
else
	return TRUE;
}

 

If it's a valid email address it will return true, if not it will return false... so;

 

<?php
$email = "name@mydomain.com";
if(emailCheck($email)) {
echo 'Valid Email';
} else {
echo 'Non-valid Email';
}