RE: Regular expression - URL validator

["Wagner Garcia Campagner" <wagnergc@xxxxxxxxxxx>]

Thanks Jim,

Your sugestion worked perfect for me!!

I have another question:

After i validate this URL i want to put a link with this URL in my page.

The problem is that if the URL is like (www.aol.com), when i create the
link, this URL is appended with the URL of my site. The result is a link
pointing to: http://<mywebsite>/www.aol.com

But if the URL is like (http://aol.com), then the link is created correct.

Is there a way to avoid the first situation... so the link is created
correct?

Thanks again,
Wagner.



-----Original Message-----
From: Jim Lucas [mailto:lists@xxxxxxxxx]
Sent: segunda-feira, 27 de agosto de 2007 17:36
To: PHP General; wagnergc@xxxxxxxxxxx
Subject: Re:  Regular expression - URL validator


Wagner Garcia Campagner wrote:
 > Hello,
 >
 > I found this regular expression on a web site.
 > It is basicaly an URL validator.
 >
 > I'm trying to implement this in my web site, but i receive errors.
 >
 > I think this is a PERL REGEX so what should i do to make it work in php?
 >
 >
 > $valid =
 >
(preg_match('^((((H|h)(T|t)|(F|f))(T|t)(P|p)((S|s)?))\://)?(www.|[a-zA-Z0-9]
 >
.)[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,6}(\:[0-9]{1,5})*(/($|[a-zA-Z0-9\.\,\;\?\'\\\
 > +&amp;%\$#\=~_\-]+))*$', $_POST['website']));

This should be preg_match('/.../i', $_POST['website'])

your regex should look something like this.

^((ftp|(http(s)?))://)?(\.?([a-z0-9-]+))+\.[a-z]{2,6}(:[0-9]{1,5})?(/[a-zA-Z
0-9.,;\?|\'+&%\$#=~_-]+)*$

So, put it all together and it should look like this.

<?php

$url = "...PUT YOUR TEST URL HERE...";

if (
preg_match('!^((ftp|(http(s)?))://)?(\.?([a-z0-9-]+))+\.[a-z]{2,6}(:[0-9]{1,
5})?(/[a-zA-Z0-9.,;\?|\'+&%\$#=~_-]+)*$!i',
$url) ) {
	echo "Matched";
} else {
	echo "Did not match";
}




 >
 > if ($valido == 0) {
 >     something here;
 >     }
 > else {
 >     something else here;
 >     }
 >
 >
 > Thanks a lot in advance,
 > Wagner.
 >



--
Jim Lucas

    "Some men are born to greatness, some achieve greatness,
        and some have greatness thrust upon them."

Twelfth Night, Act II, Scene V
     by William Shakespeare

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