email script help pls

[VenusJ]

hello,
i have a script that check user's email before accepting their registration.

this is part of the script:

blah...

elseif (!ereg("^[a-zA-Z0-9_\.]+@[a-zA-Z0-9\-]+\.[a-zA-Z0-9\-\.]+$", $useremail))
{echo "wrong email";}
else
blah..

My problem is I also want to check user's email domain name. Like say if the user's email address is [e-mail], they cannot register my system. So, the bottom line is any of those with free email account cannot register my system. Sorry, it's hard to put it in words
thank you sir

[hi-liter]

u can isolate the domain part and test against that, see this post on seperating the email address:

http://phpbuilder.com/board/showthread.php?s=&threadid=10242021

[heyrad]

after you check the syntax of the email... try something like this:

// array of free email services
$bad_mailers = array('hotmail.com','yahoo.com','msn.com');

// test email address
$mail = '[e-mail]';

$domain = explode("@",$mail);
if (in_array($domain[1],$bad_mailers)) {echo "bad mail";}
else { echo "good mail"; }

get it?

-heyrad

[VenusJ]

Hello,
that's exactly what i wanted 🙂
thank you, will try it and let you know

thank you sir

[VenusJ]

works perfectly, but why is [1] being use?

if (in_array($domain[1],$bad_mailers))

thanks

[heyrad]

Hi Venus...

---

$domain = explode("@",$mail);
if (in_array($domain[1],$bad_mailers)) {echo "bad mail";}

else { echo "good mail"; }

when we "explode" the $mail var, it separates $mail at the "@" sign. in each email address, there is only 1 "@". So, we only have 2 vars in our exploded array:

if $testmail = [e-mail]...
$domain = explode("@",$testmail);
$domain[0] = heyrad -- the left side of "@"
$domain[1] = hotmail.com -- the right side of "@"

Remember... arrays are indexed starting at 0 🙂
So, we check the 2nd var in the array($domain[1]) to see if it matches... Hope this helped..

-heyrad