Some Pagination issues

[dropfaith]

Im using the pagination tutorial by Crayon Violet

but im having a hard time  editing it to do exactly what i  need

two issues

its for an image gallery  so one one page i display thumbnails  then you click

http://dropfaith.freei.me/galleryimage.php?Id=31&gallery=..headshots.. the thumbnail link like the one above

 

it pulls all images from that gallery  but the issue is Id 31  may be  above the amount of pages  in that gallery because Id is from the table that includes all images spanning multiple gallerys

 

(ie) theres 6 gallerys with 10 images each    gallery 4s 3rd image is Id 43 but the way pagination is set up 43 is above the amount of pages in gallery 4

if (isset($_GET['Id']) && is_numeric($_GET['Id'])) {  
   // cast var as int  
    $Id = (int) $_GET['Id']; 
} else {
   // default page num
   $Id = 1;
} // end if

// if current page is greater than total pages...
if ($Id > $totalpages) {
   // set current page to last page
   $Id = $totalpages;
} // end if
// if current page is less than first page...
if ($Id < 1) {
   // set current page to first page
   $Id = 1;
} // end if

-----

Second Issue is say  the user never entered a website for the photographer or he doesn't have one  i don't want that row to display to the user making it look incomplete

echo "<tr><td>Photographers Website:<a href=\"". $list['photographersite'] . "\">". $list['photographersite'] . "</a></td></tr>";

 

 

<?php
// includes
  include("admin/db_connect.inc.php");

        // open database connection
$connection = mysql_connect(HOST, DBUSER, PASS) or  die('Could not connect !<br />Please contact the site\'s administrator.');
$db = mysql_select_db(DB) or  die('Could not connect to database !<br />Please contact the site\'s administrator.');


// find out how many rows are in the table 

$Gallery = mysql_escape_string(trim(htmlentities($_GET['gallery'])));
$sql = "SELECT COUNT(*) FROM images WHERE gallery = '$Gallery'";
$result = mysql_query($sql, $connection) or trigger_error("SQL", E_USER_ERROR);
$r = mysql_fetch_row($result);
$numrows = $r[0];



// number of rows to show per page
$rowsperpage = 1;
// find out total pages
$totalpages = ceil($numrows / $rowsperpage);
// get the current page or set a default  
if (isset($_GET['Id']) && is_numeric($_GET['Id'])) {  
   // cast var as int  
    $Id = (int) $_GET['Id']; 
} else {
   // default page num
   $Id = 1;
} // end if

// if current page is greater than total pages...
if ($Id > $totalpages) {
   // set current page to last page
   $Id = $totalpages;
} // end if
// if current page is less than first page...
if ($Id < 1) {
   // set current page to first page
   $Id = 1;
} // end if

// the offset of the list, based on current page 
$offset = ($Id - 1) * $rowsperpage;

// get the info from the db 
$sql = "SELECT * FROM images WHERE gallery = '$Gallery' order by Id asc LIMIT $offset, $rowsperpage";
$result = mysql_query($sql, $connection) or trigger_error("SQL", E_USER_ERROR);
// while there are rows to be fetched...
while ($list = mysql_fetch_assoc($result)) {
   // echo data
   
   
   
  

echo "<table border=\"0\"><tr height=\"450\"><td valign=\"center\" align=\"center\"> ";
echo "<img style=\"max-width:400px;\" src=\"". $list['actual'] . "\" /></td></tr> ";
echo "<tr><td>Photographer:". $list['photographer'] . "</td></tr>";
echo "<tr><td>Photographers Website:<a href=\"". $list['photographersite'] . "\">". $list['photographersite'] . "</a></td></tr>";
echo "<td><tr><p>". $list['Description'] . "</p></td></tr>";
echo "</td></tr><p>". $list['extra'] . "";
echo "</td></tr></table> ";

} // end while

echo "<table><tr>";
/******  build the pagination links ******/
// range of num links to show
$range = 3;

// if not on page 1, don't show back links
if ($Id > 1) {
   // show << link to go back to page 1
   echo " <td><a href='{$_SERVER['PHP_SELF']}?Id=1&gallery=$Gallery'>First Pic</a></td> ";
   // get previous page num
   $prevpage = $Id - 1;
   // show < link to go back to 1 page
   echo " <td><a href='{$_SERVER['PHP_SELF']}?Id=$prevpage&gallery=$Gallery'>Previous </a> </td>  ";
} // end if 



// if not on last page, show forward and last page links	
if ($Id != $totalpages) {
   // get next page
   $nextpage = $Id + 1;
    // echo forward link for next page 
   echo " <td><a href='{$_SERVER['PHP_SELF']}?Id=$nextpage&gallery=$Gallery'>Next </a> </td> ";
   // echo forward link for lastpage
   echo " <td><a href='{$_SERVER['PHP_SELF']}?Id=$totalpages&gallery=$Gallery'>Last Pic</a></td></tr></table> ";
} // end if
/****** end build pagination links ******/
echo "</div>";
echo "</div>";

?>

[dropfaith]

Second issue now solved

  if(empty($list['photographersite'])){
echo " ";
} else {
echo "<tr><td>Photographers Website:<a href=\"". $list['photographersite'] . "\">". $list['photographersite'] . "</a></td></tr>";
}

[dropfaith]

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