Retrieve and output certain files within a directory

[WA]

I thought I'd kick start this forum by posting a PHP code I put together yesterday to allow me to retrieve all files within a directory, limited by file types (ie: images only). I needed it to dynamically populate a JavaScript slideshow with all images from a directory without maually specifying each image. Here it is:

PHP Code:

//This function retrieves all files within a directory (non recursive) and outputs them onto the page
//You can limit the type of files to retrieve, such as images only, as dictated by the file's extension
 
 
function getfiles($dirname=".") {
$pattern="(\.jpg$)|(\.png$)|(\.jpeg$)|(\.gif$)"; //valid image extensions
$files = array();
if($handle = opendir($dirname)) {
   while(false !== ($file = readdir($handle))){
      if(eregi($pattern, $file)) //if this file is a valid image
         echo "$file <br />";
   }
 
closedir($handle);
}
return($files);
}
//EXAMPLE USAGE:
getfiles(); //List all image files within the directory the PHP script is in
getfiles("/home/myserver/public_html/george"); //List all image files within a specific directory on the server 


Example output:

backgr10.jpg
backgr11.jpg
backgr12.jpg
backgr13.jpg
backgr14.jpg
backgr15.jpg
backgr16.jpg


Reference(s) used: http://ca.php.net/manual/en/function.readdir.php

[gsnedders]

Under that, a file such as blah.jpeg.html would show up.

Try replacing

PHP Code:

if(stristr($file, ".".$ext[$i])) 


With:

PHP Code:

if (strtolower(substr(strrchr($file, '.'), 1)) == strtolower($ext[$i])) 


[marek_mar]

How about changing

PHP Code:

           for($i=0; $i<sizeof($ext); $i++) 
               if(stristr($file, ".".$ext[$i])) 
                                         echo "$file <br />"; 


to

PHP Code:

if(in_array(pathinfo($file, PATHINFO_EXTENSION), $ext)
{
   print $file;
} 


[WA]

Hi Error 404:
You read my mind. that Using regular expressions to properly detect a valid image format was one of the things I knew I had to add. Thanks for the modification.

[WA]

I've just edited the code above to use regular expressions to better filter out a valid image based on its extension.

[shinko_metsuo]

How would I get it to list directories too?

[gsnedders]

PHP Code:

//This function retrieves all files within a directory (non recursive) and outputs them onto the page
//You can limit the type of files to retrieve, such as images only, as dictated by the file's extension
 
 
function getfiles($dirname=".") {
$pattern="(\.jpg$)|(\.png$)|(\.jpeg$)|(\.gif$)"; //valid image extensions
$files = array();
if($handle = opendir($dirname)) {
   while(false !== ($file = readdir($handle))){
      if(eregi($pattern, $file) || is_dir($file)) //if this file is a valid image or folder
         echo "$file <br />";
   }
 
closedir($handle);
}
return($files);
}
//EXAMPLE USAGE:
getfiles(); //List all image files within the directory the PHP script is in
getfiles("/home/myserver/public_html/george"); //List all image files within a specific directory on the server 


Untested, but should work.

[shinko_metsuo]

Thanks a lot

[Element]

Also

PHP Code:

"(\.jpg$)|(\.png$)|(\.jpeg$)|(\.gif$)" 


Can easily be

PHP Code:

"\.(jpg|jpeg|png|gif|bmp)$" 


With preg_match()

That might not be the correct regular expression, I am horrible with it, but I used that for my version that I used.