从数组中删除不是域/链接的项目（不带http / www）

I am using php.

I have these lines of text in textbox:

Technology, Sciene
Domains
www.abc.de
http://cdf.com
something.co.uk

Health, Wellness
Domains
wellness.com
wellbeing.de
feelgood.ca
feelawesome.de.vu

My php script is getting each line into an array which I loop through later. What I want: delete every line that is not a domain or link.`

Note: My domains do not necessarily come with a http or www.

What code I came up with so far:

preg_match('|^http(s)?://[a-z0-9-]+(.[a-z0-9-]+)*(:[0-9]+)?(/.*)?$|i', $url);

I would add an "http://" if there is non already and then run the code above...

But it doesn't work.

The Line "Domain" still gets recognized as a valid domain.

Any Idea?

Off the top of my head:

foreach($arrayItem as $item){
     $validUrls[] = filter_var($item, FILTER_VALIDATE_URL); 
}

But you could make this suit your purposes perhaps a bit better by looking into filter_var and it's array-friendly counter-part -- as well as some of the alternative filters that aren't picky about http:// or www.

if(preg_match('/^(https?:\/\/)?([\w-~]{2,}\.){1,3}(com|uk|de|ca|vu)(\/.*)?$/i',$host[$i])){
  ...
}

or:

if(preg_match('/^(https?:\/\/)?([\w-~]{2,}\.){1,3}[a-z]{2-13}(\/.*)?$/i',$host[$i])){
  ...
}

\w stands for [a-zA-Z0-9_]

See on Wiki: top level domains what's possible.