title: $_FILES[$file][type] php variable value
body: <p>Some years ago there was an opinion, that $_FILES[$file]['type'] contains mimetype sent from a browser, but not real mimetype, for example here:</p>
  
  <p><a href="http://php.net/manual/ru/reserved.variables.files.php#109902" rel="nofollow">http://php.net/manual/ru/reserved.variables.files.php#109902</a></p>
  
  <p>Is it still so and do i still need to use fileinfo extension to detect mimetype?
  (i am using php5.4)</p>