Description:
------------
Use pathinfo() or basename() to parse a string "/opt/"
it will tell me the path is "\" and the filename is "opt"


Reproduce code:
---------------
<?php

parsePath("/opt/");
parsePath("/opt/file");

function parsePath($str) {
  print("dirname:" . dirname($str) . "<br />\n");
  print("basename:" . basename($str) . "<br />\n");

  print("pathinfo:");
  print_r(pathinfo($str));
  print("<br /><br />\n");
}

?>

Expected result:
----------------
dirname:/opt
basename:
pathinfo:Array ( [dirname] => /opt [basename] => [filename] => )

dirname:/opt
basename:file
pathinfo:Array ( [dirname] => /opt [basename] => file [filename] => file ) 

even return the "/" as "\" is acceptable

dirname:\opt
basename:
pathinfo:Array ( [dirname] => \opt [basename] => [filename] => )

dirname:/opt
basename:file
pathinfo:Array ( [dirname] => /opt [basename] => file [filename] => file ) 

Actual result:
--------------
dirname:\
basename:opt
pathinfo:Array ( [dirname] => \ [basename] => opt [filename] => opt )

dirname:/opt
basename:file
pathinfo:Array ( [dirname] => /opt [basename] => file [filename] => file )