Very good directory navigation file code

This code is short, but very practical, it can easily create the directory you specify the name of the specified suffix file hyperlink, and can be set, will not be the specified directory first navigation.
<?php

function NavBar () {
$files = Dir ("."); Specify directory
$pipe = "|"; Pipe character
Search for all files in the directory through the following loop
while ($current = $files->read ()) {
Ignor all files is not. htm type.
if (Strpos ($current, "PHP")!= FALSE)//Set suffix to php file will be navigated
Ignore yourself (e.g. index.html)
{if (Strpos ($current, "ndex") = = FALSE)
{
Print "<a href= '";
Print $current;
Print "' >";
Print $current;
print "</a>";
Print $pipe;
};
};
};
};
NavBar ()//Call function
?>