Re: Alphanumeric Strings
| From: | John McKown | Date: | Thu, 14 Sep 2000 23:20:03 +0000 |
| Subject: | Re: Alphanumeric Strings | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-16864@lists.php.net to get a copy of this message | ||
On Thu, 14 Sep 2000, Jason Granum wrote:
> I can't seem to find the regex I'm looking for here.
> If anyone could point me in the right direction.
> I'm trying to see if a string contains ONLY alphanumeric characters.
> Is there an easy regex to find this out? Tnx
>
I think the following should do it:
if (!eregi("^[a-zA-z]+$",$variable)) {
echo "Variable contains non-alphabetic characters.";
exit;
}
This will require at least one character. Use an asterisk (*) if you don't
mind an empty string.
John