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Hi, i have an issue to sort gallery photos by date. Right now its sort by Value (Name). here is the code index.php contains : <div> <?php foreach($categories_array as $photo_category=>$photos_array){?> <?php $category_thumbnail = $gallery_url."/layout/pixel.gif"; if(file_exists('files/'.$photo_category.'/thumbnail.jpg')){ $category_thumbnail = $gallery_url.'/'.$photo_category.'/thumbnail.jpg'; } $category_url = $gallery_url.'/'.$photo_category; ?> <span class="category_thumbnail_span" style="width:<?php echo $settings_thumbnail_width;?>px; height:<?php echo $settings_thumbnail_height+20;?>px;"> <a class="category_thumbnail_image" href="<?php echo $category_url;?>" style="width:<?php echo $settings_thumbnail_width;?>px; height:<?php echo $settings_thumbnail_height;?>px; background-image:url('<?php echo $gallery_url;?>/layout/lens_48x48.png');" title="<?php echo htmlentities(ucwords(str_replace('-', ' ', $photo_category)));?>"> <img src="<?php echo $category_thumbnail;?>" width="<?php echo $settings_thumbnail_width;?>" height="<?php echo $settings_thumbnail_height;?>" alt="<?php echo htmlentities(ucwords(str_replace('-', ' ', $photo_category)));?>" /> </a> <a class="category_thumbnail_title" href="<?php echo $category_url;?>" title="<?php echo htmlentities(ucwords(str_replace('-', ' ', $photo_category)));?>"> <?php echo htmlentities(str_replace('-',' ', truncate_by_letters($photo_category, 16, '..')), ENT_QUOTES, "UTF-8");?> (<?php echo count($photos_array);?>) </a> </span> <?php } ?> </div> the sort function : ksort($categories_array);