RE: [PHP] Regular expression - URL validator

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@cmsws.com] Sent: segunda-feira, 27 de agosto de 2007 17:36 To: PHP General; wagnergc@itautec.com Subject: Re: [PHP] 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