Website address form validation

I need some validation to check the format of a website address eg (www.websiteaddress.com) but im having difficulty finding code to do this, can anyone help me or provide some advice? Would really appreciate it.

I need some validation to check the format of a website address eg (www.websiteaddress.com) but im having difficulty finding code to do this, can anyone help me or provide some advice? Would really appreciate it.

what kind of validation? some basic things you can do, using:

http://www.php.net/manual/en/ref.url.php

if you use them take care of php version.

best regards

I use this on a few of the sites I've made
function validateURL($str)
{
if(!preg_match("/^[a-zA-Z]+[:\/\/]+[A-Za-z0-9\-_]+\\.+[A-Za-z0-9\.\/%&=\?\-_]+$/i",$str))
{
return false;
}
}
// Usage:
if(validateURL('http://codingforums.com'))
{
echo 'The url is valid';
}
else
{
echo 'The url is not valid';
}

I use this on a few of the sites I've made
function validateURL($str)
{
if(!preg_match("/^[a-zA-Z]+[:\/\/]+[A-Za-z0-9\-_]+\\.+[A-Za-z0-9\.\/%&=\?\-_]+$/i",$str))
{
return false;
}
}
// Usage:
if(validateURL('http://codingforums.com'))
{
echo 'The url is valid';
}
else
{
echo 'The url is not valid';
}

Thanks for the reply, il give that a go, thanks ago