Directory Listings, list files and subfolder using php

This is the simple example to list contents of any Directory. To do this we are going to define function DirDisply( ) which will read the current directory contents and display it as a list.

We first open current directory by $TrackDir=opendir(".");
The opendir function returns a directory handle resource on success, or FALSE on failure.

Syntax is:
opendir ( string path [, resource context] )

Where:
Path - The directory path that is to be opened

Context - For a description of the context parameter, refer to the streams section of the php manual.

If path is not a valid directory or the directory cannot be opened due to permission restrictions or file system errors, opendir() returns FALSE and generates a PHP error of level E_WARNING. You can suppress the error output of opendir() by prefix'@' to the front of the function name.

Here “.” Indicates the directory which contain current php file and read each element of directory and display it using a while loop.

while ($file = readdir($TrackDir)) {

if ($file == "." || $file == "..") { }
else {
print "<tr><td><font face=\"Verdana, Arial, Helvetica, sans-serif\"><a href=$file target=_blank>$file</a></font> </td>";
print "<td>  ".filetype($file)."</td></tr><br>";

}

}

And then we have to close directory by closedir($TrackDir); Which Closes the directory stream indicated by dir_handle. The stream must have previously been opened by opendir().

Syntx:
void closedir ( resource dir_handle )

Where,
dir_handle - The directory handle resource previously opened with opendir().

A resource is a special variable, holding a reference to an external resource. Resources are created and used by special functions.

When I run complete script on Web server I got result as below shown in figure:


Our complete piece of code will be as listing below:

<?php
/*
function that reads directory content and
returns the result as links to every file in the directory
also it disply type wheather its a file or directory
*/
function DirDisply() {

$TrackDir=opendir(".");

while ($file = readdir($TrackDir)) {

if ($file == "." || $file == "..") { }
else {
print "<tr><td><font face=\"Verdana, Arial, Helvetica, sans-serif\"><a href=$file target=_blank>$file</a></font> </td>";
print "<td>  ".filetype($file)."</td></tr><br>";

}
}
closedir($TrackDir);
return;
}

?> <b><font face="Verdana, Arial, Helvetica, sans-serif">Current Directory Contain
Following files and Sub Directories...</font></b>
<p>
<?php
@ DirDisply();
?>

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