Very easy, if your site do not have support for curl, and you can't have your oun link checker on your site.
You can use this code an place them on the page were you want see the link checker form.
This can check almost every host file host.
You can use this code an place them on the page were you want see the link checker form.
Code:
<center><form action="http://stugas-ddl.org/LC/lc.php" method="post" target="_blank">
<textarea name="links" rows="10" cols="50"></textarea><br />
<input value="Check Links" name="submit" type="submit"></form></center>
This can check almost every host file host.