Check URL on website

This piece of code will check if the URL “http://scripts.friendsinwar.com” is on her/his website.
It will also checks some other things before we can finally put the users inputs into a database or something.
The script will check that the users website URL is a valid URL and will return code 200. It will also checks that the website input field in filled in.

example:
You can try it by putting a link to http://scripts.friendsinwar.com and fill the form below.

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