Here is a more advanced version for reading and linking to the file names of a directory. This makes for easy download for the user without having the programmer to write extensive codes.
Features:
* show subdirectorienames or not
* show files in subdirectories or not (independently of showing subdir names, but including subdir names for these files)
* compare filenames against a list of allowed file extentions
* filter out systemfiles such as .htaccess
* natural sort order (i.e.: 1.txt, 5.txt, 10.txt rather than 1.txt, 10.txt, 5.txt)
* filter out symbolic links
The output will be an array with the filenames so you can layout the screendata whichever way you like.
| Code: |
<?php
function getDirectoryListing($dirname, $sortorder = "a", $show_subdirs = 0, $show_subdirfiles = 0, $exts = "", $ext_save = 1) {
// This function will return an array with filenames based on the criteria you can set in the variables
// @sortorder : a for ascending (the standard) or d for descending (you can use the "r" for reverse as well, works the same)
// @show_subdirs : 0 for NO, 1 for YES - meaning it will show the names of subdirectories if there are any
// Logically subdirnames will not be checked for the required extentions
// @show_subdirfiles : 0 for NO, 1 for YES - meaning it will show files from the subdirs
// Files from subdirs will be prefixed with the subdir name and checked for the required extentions.
// @exts can be either a string or an array, if not passed to the function, then the default will be a check for common image files
// If exts is set to "all" then all extentions are allowed
// @ext_save : 1 for YES, 0 for NO - meaning it will filter out system files or not (such as .htaccess)
if (!$exts || empty($exts) || $exts == "") {
$exts = array("jpg", "gif", "jpeg", "png");
}
if ($handle = opendir($dirname)) {
$filelist = array();
while (false !== ($file = readdir($handle))) {
// Filter out higher directory references
if ($file != "." && $file != "..") {
// Only look at directories or files, filter out symbolic links
if ( filetype ($dirname."/".$file) != "link") {
// If it's a file, check against valid extentions and add to the list
if ( filetype ($dirname."/".$file) == "file" ) {
if (checkFileExtention($file, $exts, $ext_save)) {
$filelist[] = $file;
}
}
// If it's a directory and either subdirs should be listed or files from subdirs add relevant names to the list
else if ( filetype ($dirname."/".$file) == "dir" && ($show_subdirs == 1 || $show_subdirfiles == 1)) {
if ($show_subdirs == 1) {
$filelist[] = $file;
}
if ($show_subdirfiles == 1) {
$subdirname = $file;
$subdirfilelist = getDirectoryListing($dirname."/".$subdirname."/", $sortorder, $show_subdirs, $show_subdirfiles, $exts, $ext_save);
for ($i = 0 ; $i < count($subdirfilelist) ; $i++) {
$subdirfilelist[$i] = $subdirname."/".$subdirfilelist[$i];
}
$filelist = array_merge($filelist, $subdirfilelist);
}
}
}
}
}
closedir($handle);
// Sort the results
if (count($filelist) > 1) {
natcasesort($filelist);
if ($sortorder == "d" || $sortorder == "r" ) {
$filelist = array_reverse($filelist, TRUE);
}
}
return $filelist;
}
else {
return false;
}
}
function checkFileExtention($filename, $exts, $ext_save = 1) {
$passed = FALSE;
if ($ext_save == 1) {
if (preg_match("/^\./", $filename)) {
return $passed;
}
}
if ($exts == "all") {
$passed = TRUE;
return $passed;
}
if (is_string($exts)) {
if (eregi("\.". $exts ."$", $filename)) {
$passed = TRUE;
return $passed;
}
} else if (is_array($exts)) {
foreach ($exts as $theExt) {
if (eregi("\.". $theExt ."$", $filename)) {
$passed = TRUE;
return $passed;
}
}
}
return $passed;
}
?> |
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