Check that website is valid?

Hey, basically I have a link submitting script although the user can enter "dfdf"
and it'll still process it. Can anyone help me in checking that the website/sub-domain is valid?

 

If you just want to check if a URL entered is valid, you can try this:

$url = $_POST['url'];
if (preg_match("/^(http(s*):\/\/|ftp:\/\/)((\w+\.)+)\.[a-z]{2,}$/i", $url)) {
echo "Valid URL";
}
else {
echo "Invalid URL";
}

PHP:

This checks also for http(s) and ftp at the beginning.

HTH, cheers!

 

You can try:

$link='http://www.google.com';

//grab content
$html= @file_get_contents($link);

if($html) echo 'Valid page';
else echo 'No page content';

PHP:

Hope it helps

 

Why download the entire page?

If you want to take this style, use fopen instead of reading the entire page.

Peace,