title: Intellij PHP remote debugging: Failed to execute validation script
body: <p>I am trying to configure the PHP remote debugging feature of the PHP plugin in IntelliJ. When I try to validate my configuration I get the following error:</p>
  
  <pre><code>Failed to execute validation script:
  'Could not read from "host:port/path/to/_intellij_phpdebug_validator.php"
  because it is not a file.'
  </code></pre>
  
  <p>I don't really know where the problem is. I assume this php file is something that IntelliJ copies to the remote server and then tries to execute. But for some reason that fails. Can anyone provide some insight what this error means and how to fix it?</p>