Question

I’m trying to block all email providers except some of theme,

PHP code:

$hostings = "/@yahoo|@gmail|@msn/";
if(!preg_match($hostings, $email))
$stop .= "Invalid Email Provider";

Problem is, i can’t use capital letters! for example i cant use this email:

Gmail.com

How i can fix that?

Answer 1

You need the /i modifier to make your regex case-insensitive.

(You could also compare strtolower($email) against your regex.)

Finally, I suggest you hoist the @ so you have /@(yahoo|gmail|msn)/.

Edit: Combined, your regex looks like this: /@(yahoo|gmail|msn)/i.