[Resolved] splitting up a readdir() array

[sebconn]

Hi there, I'm making a very basic image gallery script for an intranet that simply scanss the directories, and displays the thumbnails for the image.

Because it's an intranet, I'm not worrying about generating thumbnails, I'm just loading the original files into the gallery. And this works perfectly fine on an intranet until you find a directory with more than say 30 or so images. So I thought I'd split them up into pages.

Here's the code I use to read the directories and list the directories

$handle=opendir($fulldir); 
						while (false!==($file = readdir($handle))) { 
				if ($file != "." && $file != ".."
&& $file != "index.php" && $file != "Redundant" && $file != "images" && $file != "gallery.css" && $file != "webfxlayout.local.js" && $file != "Thumbs.db" && $file != "Mavica.htm" && $file != "blank.gif" && $file != "pngbehavior.htc") {
					$filename = str_replace("_"," ",$file);
					$fileloca = str_replace(" ","%20",$file);
					$fileloca = str_replace("&","&", $fileloca);
					$type = substr("$file", -4);

				if ($type == ".JPG" || $type == ".jpg"){

				$size = getimagesize("$dir/$file");
				$width = "$size[0]";
				$height = "$size[1]";

				if ( $height > $width ){
				$widthheight = "width=\"75\" height=\"100\"";
				$divid = "photo2";
				}else{
				$widthheight = "width=\"100\" height=\"75\"";
				$divid = "photo1";
				}
				echo "<div id=\"$divid\"><a href=\"index.php?dir=$fileloca&amp;prevdir=$dir&amp;fileloca=$fileloca&amp;view=1\"><img alt=\"$file\" src=\"$dir/$fileloca\" border=\"0\" $widthheight /></a></div>";
				}else{
				echo "<span class=\"albumname\"><a href=\"index.php?dir=$fileloca&amp;prevdir=$dir\"><div id=\"album\">$filename</span></a></div>";
				//<img alt=\"album\" src=\"images/album.gif\" border=\"0\" width=\"100\" height=\"100\" />
				}
			} 
		}
		closedir($handle);

I'm guessing to split this up into pages you would use the array_slice() function like array_slice($file, 0, 30)

and the link to the next page would change the parameters to $file, 30, 0) or something like that.

I'm just not quite sure how I would incorperate that into my loop.

Anyone have any suggestions?

[bradgrafelman]

Well, you could read all the file names into an array first, slice the array, and then run your code on the new array, like so:

$limit = 30;
$page = (@$_GET['page'] ? $_GET['page'] : 1);
$file_list = array();
$handle=opendir($fulldir);  

                        while (false!==($file = readdir($handle))) { 
                if ($file != "." && $file != ".." && $file != "index.php" && $file != "Redundant" && $file != "images" && $file != "gallery.css" && $file != "webfxlayout.local.js" && $file != "Thumbs.db" && $file != "Mavica.htm" && $file != "blank.gif" && $file != "pngbehavior.htc") { 

                    $file_list[] = $file;

                }
            }  

$num_pages = ceil(count($file_list) / $limit);
$file_list = array_slice($file_list, ($limit * ($page - 1)), (($limit * ($page - 1)) + $limit));


                    foreach($file_list as $file) {  

                $filename = str_replace("_"," ",$file); 
                $fileloca = str_replace(" ","%20",$file); 
                $fileloca = str_replace("&","&", $fileloca);

                $type = substr($file, -4); 

                if ($type == ".JPG" || $type == ".jpg"){ 

                $size = getimagesize("$dir/$file"); 
                $width = "$size[0]"; 
                $height = "$size[1]"; 

                if ( $height > $width ){ 
                $widthheight = "width=\"75\" height=\"100\""; 
                $divid = "photo2"; 
                }else{ 
                $widthheight = "width=\"100\" height=\"75\""; 
                $divid = "photo1"; 
                } 
                echo "<div id=\"$divid\"><a href=\"index.php?dir=$fileloca&prevdir=$dir&fileloca=$fileloca&view=1\"><img alt=\"$file\" src=\"$dir/$fileloca\" border=\"0\" $widthheight /></a></div>"; 
                }else{ 
                echo "<span class=\"albumname\"><a href=\"index.php?dir=$fileloca&prevdir=$dir\"><div id=\"album\">$filename</span></a></div>"; 
                //<img alt=\"album\" src=\"images/album.gif\" border=\"0\" width=\"100\" height=\"100\" /> 
                } 
            }   
        closedir($handle);

The spacing is probably off, as I didn't have time to mess with it. Also, the above code does NOT include links, as I didn't know where/how you wanted to link, but this would be how you do it:

$page_list = '';
for($i = 0; $i <= $num_pages; $i++) if($page == $i) $page_list .= "Page $i | "; else $page_list .= "<a href=\"myscript.php?page=$i\">Page $i</a> | ";

echo rtrim($page_list, '| ');

This code is completely untested, but give it a shot.

EDIT: $limit in the code is the max # of pics per page, btw. Forgot to mention that :p

[sebconn]

worked like a charm, just gotta mess with the links bit and it should work fine, thanks very much