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Image Gallery Display Problem


kafia
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Regards i have a simple image gallery with php i have image category list with number of pictures with in a category, but i dont know how to display that category with a thumbnail image, any one can help me, and i want to change that image after every refresh on teh page.my code is as below,<?php include("config.inc.php"); // initialization $result_array = array(); $counter = 0; $cid = (int)($_GET['cid']); $pid = (int)($_GET['pid']); // Category Listing if( empty($cid) && empty($pid) ) { $number_of_categories_in_row = 4; $result = mysql_query( "SELECT c.category_id,c.category_name,COUNT(photo_id) FROM gallery_category as c LEFT JOIN gallery_photos as p ON p.photo_category = c.category_id GROUP BY c.category_id" ); while( $row = mysql_fetch_array( $result ) ) { $result_array[] = "<a href='viewgallery.php?cid=".$row[0]."'>".$row[1]."<br/></a> "."[".$row[2]."photos]"; } mysql_free_result( $result ); $result_final = "<tr>\n"; foreach($result_array as $category_link) { if($counter == $number_of_categories_in_row) { $counter = 1; $result_final .= "\n</tr>\n<tr>\n"; } else $counter++; $result_final .= "\t<td>".$category_link."</td>\n"; }?> quick help is needed

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Inside this loop:

while( $row = mysql_fetch_array( $result ) ){

You need another query for the current category. It's not the best idea to put a query in a loop, but doing a join to return a random image from the category in the first query might be a little complex. So inside that loop, you need to send a query to get a random image from the category. You can use a query like this to return a random record:SELECT field FROM table ORDER BY RAND() LIMIT 1

Edited by justsomeguy
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yes in real i miss to understand all all here is all my code to view my gallery <?php include("config.inc.php"); // initialization $result_array = array(); $counter = 0; $cid = (int)($_GET['cid']); $pid = (int)($_GET['pid']); // Category Listing if( empty($cid) && empty($pid) ) { $number_of_categories_in_row = 4; $result = mysql_query( "SELECT c.category_id,c.category_name,COUNT(photo_id) FROM gallery_category as c LEFT JOIN gallery_photos as p ON p.photo_category = c.category_id GROUP BY c.category_id" ); while( $row = mysql_fetch_array( $result )) { $result_array[] = "<a href='viewgallery.php?cid=".$row[0]."'>".$row[1]."<br/></a> "."[".$row[2]."photos]"; } mysql_free_result( $result ); // $result_final = "<tr>\n"; foreach($result_array as $category_link) { if($counter == $number_of_categories_in_row) { $counter = 1; //$result_final .= "\n</tr>\n<tr>\n"; } else $counter++; $result_final .= "\t<td>".$category_link."</td>\n"; } if($counter) { if($number_of_categories_in_row-$counter) $result_final .= "\t<td colspan='".($number_of_categories_in_row-$counter)."'> </td>\n"; $result_final .= "</tr>"; } } // Thumbnail Listing else if( $cid && empty( $pid ) ) { $number_of_thumbs_in_row = 5; $result = mysql_query( "SELECT photo_id,photo_caption,photo_filename FROM gallery_photos WHERE photo_category='".addslashes($cid)."'" ); $nr = mysql_num_rows( $result ); if( empty( $nr ) ) { $result_final = "\t<tr><td>No Category found</td></tr>\n"; } else { while( $row = mysql_fetch_array( $result ) ) { $result_array[] = "<a href='viewgallery.php?cid=$cid&pid=".$row[0]."'><img src='".$images_dir."/tb_".$row[2]."' border='0' alt='".$row[1]."' /></a>"; } mysql_free_result( $result ); $result_final = "<tr>\n"; foreach($result_array as $thumbnail_link) { if($counter == $number_of_thumbs_in_row) { $counter = 1; $result_final .= "\n</tr>\n<tr>\n"; } else $counter++; $result_final .= "\t<td>".$thumbnail_link."</td>\n"; } if($counter) { if($number_of_photos_in_row-$counter) $result_final .= "\t<td colspan='".($number_of_photos_in_row-$counter)."'> </td>\n"; $result_final .= "</tr>"; } } } // Full Size View of Photo else if( $pid ) { $result = mysql_query( "SELECT photo_caption,photo_filename FROM gallery_photos WHERE photo_id='".addslashes($pid)."'" ); list($photo_caption, $photo_filename) = mysql_fetch_array( $result ); $nr = mysql_num_rows( $result ); mysql_free_result( $result ); if( empty( $nr ) ) { $result_final = "\t<tr><td>No Photo found</td></tr>\n"; } else { $result = mysql_query( "SELECT category_name FROM gallery_category WHERE category_id='".addslashes($cid)."'" ); list($category_name) = mysql_fetch_array( $result ); mysql_free_result( $result ); $result_final .= "<tr>\n\t<td> <a href='viewgallery.php'>Categories</a> > <a href='viewgallery.php?cid=$cid'>$category_name</a></td>\n</tr>\n"; $result_final .= "<tr>\n\t<td align='center'> <br /> <img src='".$images_dir."/".$photo_filename."' border='0' alt='".$photo_caption."' /> <br /> $photo_caption </td> </tr>"; } }// Final Outputecho <<<__HTML_END<html><head> <title>Gallery View</title></head><body><table width='100%' border='0' align='center' style='width: 100%;'>$result_final </table></body></html>__HTML_END;?>atthe firt page it show only category links and when i click on any of the link it go to next page and show all the thumbnail into that category.my question is that on the 1st page i like to show a image too with the category link and it much be changed after every referesh.plaese solve my problem i am much confused

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Well my answer from post 2 is still the same, so what about that did you not understand? You have this loop printing the links:

while( $row = mysql_fetch_array( $result )){  $result_array[] = "<a href='viewgallery.php?cid=".$row[0]."'>".$row[1]."<br/></a> "."[".$row[2]."photos]";}

So the row contains the category ID, category name, and the number of pictures. You need to use the category ID to get a random image from that category. So you need to select a record from gallery_photos where the category ID is the one that you're printing. That query looks like this:SELECT photo_filename FROM gallery_photos WHERE photo_category=123 ORDER BY RAND() LIMIT 1That gets a random photo from category 123.

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  • 2 weeks later...

Regards, i was out tour and so i miss to connect here for some days. i try the code as you advised me but again its not working , its working but its not showing a thumnail picture. just an empty icon,plese solve my problem my code as i did is as below. while( $row = mysql_fetch_array( $result )) {$result2= mysql_query("SELECT photo_filename FROM gallery_photos WHERE photo_category='".addslashes($cid)."' ORDER BY RAND() LIMIT 1"); //$result_array[] = "<a href='viewgallery.php?cid=".$row[0]."'>".$row[1]."<br/></a> "."[".$row[2]."photos]"; $result_array[] = "<a href='viewgallery.php?cid=".$row[0]."'><img src='".$images_dir."/tb_".$row[2]."' border='0' alt='".$row[1]."' /></a>"; } //mysql_free_result( $result ); mysql_free_result( $result2);

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