error checking email subscription

[Vampirev]

hey guys,

trying to create a php script to handle data from a webform

simple mailing list

I have all setup so it will catch and email me the input etc.

now all i need to do is setup error checking

Ie If someone enteres something without an @ or invalid character etc it says hey you cholo...wrong!

etc

I have set this up for testing purposes

if 	($email == "bah")
{

Print("<font color=#FFFFFF><p align=center>"."Thank you for joining the Faction 306 Mailing List"."</font>"."<br>");
Print("<font color=#FFFFFF><p align=center>"."An email has now been sent to ".$email."</font>");
mail($sendto, $subject, $message, $headers);
}

else
{
Print("<font color=#FFFFFF><p align=center>"."Sorry the Email address you entered was not valid please click the back button and try again"."</font>");
}

ok so at the moment it works depending on if I enter bah or something else..

what i want it to do is see if theres an @ symbol in the text and perhaps even a .ext

which means it is something in the line
if ($email == "bah")

just not sure how to do it...yet

any help appreciated

rock on
vamps

[devinemke]

this is the regex i typically use:

if (!eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*$", $email))
{
echo 'invalid email address';
}

[Vampirev]

thankyou..

is there somewhere i can look to have the code explained to me?

[thorpe]

look up regular expressions in the manual.