error in pagination

PHP programming forum. Ask questions or help people concerning PHP code. Don't understand a function? Need help implementing a class? Don't understand a class? Here is where to ask. Remember to do your homework!

Moderator: General Moderators

Post Reply
imsreejith
Forum Newbie
Posts: 1
Joined: Tue Apr 01, 2008 3:26 am

error in pagination

Post by imsreejith »

Dear all,
i am new to php and i am writing a code to get the details from a database. my problem is , the first page shows me the correct pagination and the values but when i click the next button, there is no result coming. i am adding the code herewith.

Code: Select all

<html>
<head>
<link ref="style.css" rel="stylesheet" type="text/css" >
</head>
<body>
<table border="2" cellpadding="0" cellspacing="0"> 
<table border="0">
        <tr>
          <th>CollegeName/UniversityName </th>
          <th>Courses </th>
          <th>District</th>
          <th>Location</th>
          <th>Pin Code</th>
          <th>STD-Code</th>
          <th>Phone1</th>
          <th>Phone2</th>
          <th>Phone3</th>
          <th>FaxNo.</th>
          <th>Email-Address</th>
          <th>WebPage</th>
          
        </tr> 
<?php
      $value=$_POST["searchby"];
      $host = "localhost"; //your sql host, usually 'localhost'
      $user = "root"; //username to connect to database
      $pass = ""; //password to connect to database
      $db = "onlineedu"; //the name of the database
      
      mysql_connect($host,$user,$pass) or die("ERROR:".mysql_error());
      mysql_select_db($db) or die("ERROR DB:".mysql_error());
      // newcode added //
      
 
 
    $tbl_name="tempedu";        //your table name
    // How many adjacent pages should be shown on each side?
    $adjacents = 3;
    
    /* 
       First get total number of rows in data table. 
       If you have a WHERE clause in your query, make sure you mirror it here.
    */
    $query = "SELECT COUNT(*) as num FROM $tbl_name";
    $total_pages = mysql_fetch_array(mysql_query($query));
    $total_pages = $total_pages[num];
    
    
    /* Setup vars for query. */
    $targetpage = "CollegeSearchOutput1.php";   //your file name  (the name of this file)
    $limit = 25;                        //how many items to show per page
    $page = $_GET['page'];                          
      if($page) 
        $start = ($page - 1) * $limit;      //first item to display on this page
    else
        $start = 0;                     //if no page var is given, set start to 0
    
    /* Get data. */
    $sql = "SELECT `CollegeName/UniversityName` ,
      `Courses` ,  
      `District` ,
      `Location` ,
      `P.B.Number` ,
      `STD-Code` ,
      `Phone1` ,
      `Phone2` ,
      `Phone3` ,
      `FaxNo.` ,
      `Email-Address` ,
      `WebPage` FROM $tbl_name  
       order by `CollegeName/UniversityName` 
       asc LIMIT $start, $limit";
       
    $result = mysql_query($sql);
    echo $start;
    echo $limit;
?>
 
<?
      while ($row = mysql_fetch_array($result)) 
      {
         if($value=="University")
            {
                  print "<tr>";
                  print "<td>$row[0]</td><td>$row[1]</td><td>$row[2]</td><td>$row[3]</td><td>$row[4]</td><td>$row[5]</td><td>$row[6]</td><td>$row[7]</td><td>$row[8]</td><td>$row[9]</td><td>$row[10]</td><td>$row[11]</td><td>$row[12]</td><td>$row[13]</td></tr>";
                  print "<tr>";
            }
            print "</tr></table>";
            $result->free;
            $conn->close;
      }           
 
    /* Setup page vars for display. */
    if ($page == 0) $page = 1;                  //if no page var is given, default to 1.
    $prev = $page - 1;                      //previous page is page - 1
    $next = $page + 1;                      //next page is page + 1
    $lastpage = ceil($total_pages/$limit);            //lastpage is = total pages / items per page, rounded up.
    $lpm1 = $lastpage - 1;                      //last page minus 1
    
    /* 
        Now we apply our rules and draw the pagination object. 
        We're actually saving the code to a variable in case we want to draw it more than once.
    */
    $pagination = "";
    if($lastpage > 1)
    {   
        $pagination .= "<div class=\"pagination\">";
        //previous button
        if ($page > 1) 
            $pagination.= "<a href=\"$targetpage?page=$prev\">« previous</a>";
        else
            $pagination.= "<span class=\"disabled\">« previous</span>";    
        
        //pages 
        if ($lastpage < 7 + ($adjacents * 2))   //not enough pages to bother breaking it up
        {   
            for ($counter = 1; $counter <= $lastpage; $counter++)
            {
                if ($counter == $page)
                    $pagination.= "<span class=\"current\">$counter</span>";
                else
                    $pagination.= "<a href=\"$targetpage?page=$counter\">$counter</a>";                 
            }
        }
        elseif($lastpage > 5 + ($adjacents * 2))    //enough pages to hide some
        {
            //close to beginning; only hide later pages
            if($page < 1 + ($adjacents * 2))        
            {
                for ($counter = 1; $counter < 4 + ($adjacents * 2); $counter++)
                {
                    if ($counter == $page)
                        $pagination.= "<span class=\"current\">$counter</span>";
                    else
                        $pagination.= "<a href=\"$targetpage?page=$counter\">$counter</a>";                 
                }
                $pagination.= "...";
                $pagination.= "<a href=\"$targetpage?page=$lpm1\">$lpm1</a>";
                $pagination.= "<a href=\"$targetpage?page=$lastpage\">$lastpage</a>";       
            }
            //in middle; hide some front and some back
            elseif($lastpage - ($adjacents * 2) > $page && $page > ($adjacents * 2))
            {
                $pagination.= "<a href=\"$targetpage?page=1\">1</a>";
                $pagination.= "<a href=\"$targetpage?page=2\">2</a>";
                $pagination.= "...";
                for ($counter = $page - $adjacents; $counter <= $page + $adjacents; $counter++)
                {
                    if ($counter == $page)
                        $pagination.= "<span class=\"current\">$counter</span>";
                    else
                        $pagination.= "<a href=\"$targetpage?page=$counter\">$counter</a>";                 
                }
                $pagination.= "...";
                $pagination.= "<a href=\"$targetpage?page=$lpm1\">$lpm1</a>";
                $pagination.= "<a href=\"$targetpage?page=$lastpage\">$lastpage</a>";       
            }
            //close to end; only hide early pages
            else
            {
                $pagination.= "<a href=\"$targetpage?page=1\">1</a>";
                $pagination.= "<a href=\"$targetpage?page=2\">2</a>";
                $pagination.= "...";
                for ($counter = $lastpage - (2 + ($adjacents * 2)); $counter <= $lastpage; $counter++)
                {
                    if ($counter == $page)
                        $pagination.= "<span class=\"current\">$counter</span>";
                    else
                        $pagination.= "<a href=\"$targetpage?page=$counter\">$counter</a>";                 
                }
            }
        }
        
        //next button
        if ($page < $counter - 1) 
            $pagination.= "<a href=\"$targetpage?page=$next\">next »</a>";
        else
            $pagination.= "<span class=\"disabled\">next »</span>";
        $pagination.= "</div>\n";       
    }
?>
<?=$pagination?> 
</body>
</html>
if anyone can tell me how i can do it, i will be thankful to them.

regards,
sreejith
Post Reply