this is my search page on which i am getting two parameters from previous page but the problem is that as soon as i click any other next pages my sql query fails as it doesnt get these two parameters
kindly help
this is pagination file code(ps_paginat ion.php)
kindly help
Code:
<?php
session_start();
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<meta name="generator" content="Microsoft FrontPage 5.0" />
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<meta name="description" content="" />
<meta name="keywords" content="" />
<meta name="author" content="" />
<link rel="stylesheet" href="../include/style.css" type="text/css" />
</head>
<body bgcolor="#FFFFFF" leftmargin="0" topmargin="0" marginwidth="0" marginheight="0">
<?php require("../include/header.php"); ?>
<?php require("../include/left.php"); ?>
<div class="heading">
welcome all
</div>
<div class="text">
<?php
//Include the PS_Pagination class
include('../include/ps_pagination.php');
//Connect to mysql db
$conn = mysql_connect('localhost','root','');
if(!$conn) die("Failed to connect to database!");
$status = mysql_select_db('ncpul1', $conn);
if(!$status) die("Failed to select database!");
$colv=$_POST["colv"];
$coln=$_POST["coln"];
echo "Search result for $coln------>$colv<br>";
$sql="SELECT * FROM institute WHERE ".$coln." like '%".$colv."%' order by centrecode asc";
/*
* Create a PS_Pagination object
*
* $conn = MySQL connection object
* $sql = SQl Query to paginate
* 10 = Number of rows per page
* 5 = Number of links
* "param1=valu1¶m2=value2" = You can append your own parameters to paginations links
*/
$pager = new PS_Pagination($conn, $sql, 10, 5, "param1=valu1¶m2=value2");
/*
* Enable debugging if you want o view query errors
*/
$pager->setDebug(true);
/*
* The paginate() function returns a mysql result set
* or false if no rows are returned by the query
*/
$rs = $pager->paginate();
if(!$rs) die(mysql_error());
while($row = mysql_fetch_assoc($rs)) {
echo $row['address'],"<br />\n";
}
echo "<br />\n";
echo "<br />\n";
echo"<div align='center'>";
//Display the full navigation in one go
echo $pager->renderFullNav();
echo "<br />\n";
echo"</div>";
?>
</div>
<?php require("../include/right.php"); ?><?php require("../include/footer.php"); ?>
</body>
</html>
Code:
<?php
/**
* PHPSense Pagination Class
*
* PHP tutorials and scripts
*
* @package PHPSense
* @author Jatinder Singh Thind
* @copyright Copyright (c) 2006, Jatinder Singh Thind
* @link http://www.phpsense.com
*/
// ------------------------------------------------------------------------
class PS_Pagination {
var $php_self;
var $rows_per_page = 10; //Number of records to display per page
var $total_rows = 0; //Total number of rows returned by the query
var $links_per_page = 5; //Number of links to display per page
var $append = ""; //Paremeters to append to pagination links
var $sql = "";
var $debug = false;
var $conn = false;
var $page = 1;
var $max_pages = 0;
var $offset = 0;
/**
* Constructor
*
* @param resource $connection Mysql connection link
* @param string $sql SQL query to paginate. Example : SELECT * FROM users
* @param integer $rows_per_page Number of records to display per page. Defaults to 10
* @param integer $links_per_page Number of links to display per page. Defaults to 5
* @param string $append Parameters to be appended to pagination links
*/
function PS_Pagination($connection, $sql, $rows_per_page = 10, $links_per_page = 5, $append = "") {
$this->conn = $connection;
$this->sql = $sql;
$this->rows_per_page = (int)$rows_per_page;
if (intval($links_per_page ) > 0) {
$this->links_per_page = (int)$links_per_page;
} else {
$this->links_per_page = 5;
}
$this->append = $append;
$this->php_self = htmlspecialchars($_SERVER['PHP_SELF'] );
if (isset($_GET['page'] )) {
$this->page = intval($_GET['page'] );
}
}
/**
* Executes the SQL query and initializes internal variables
*
* @access public
* @return resource
*/
function paginate() {
//Check for valid mysql connection
if (! $this->conn || ! is_resource($this->conn )) {
if ($this->debug)
echo "MySQL connection missing<br />";
return false;
}
//Find total number of rows
$all_rs = @mysql_query($this->sql );
if (! $all_rs) {
if ($this->debug)
echo "SQL query failed. Check your query.<br /><br />Error Returned: " . mysql_error();
return false;
}
$this->total_rows = mysql_num_rows($all_rs );
@mysql_close($all_rs );
//Return FALSE if no rows found
if ($this->total_rows == 0) {
if ($this->debug)
echo "Query returned zero rows.";
return FALSE;
}
//Max number of pages
$this->max_pages = ceil($this->total_rows / $this->rows_per_page );
if ($this->links_per_page > $this->max_pages) {
$this->links_per_page = $this->max_pages;
}
//Check the page value just in case someone is trying to input an aribitrary value
if ($this->page > $this->max_pages || $this->page <= 0) {
$this->page = 1;
}
//Calculate Offset
$this->offset = $this->rows_per_page * ($this->page - 1);
//Fetch the required result set
$rs = @mysql_query($this->sql . " LIMIT {$this->offset}, {$this->rows_per_page}" );
if (! $rs) {
if ($this->debug)
echo "Pagination query failed. Check your query.<br /><br />Error Returned: " . mysql_error();
return false;
}
return $rs;
}
/**
* Display the link to the first page
*
* @access public
* @param string $tag Text string to be displayed as the link. Defaults to 'First'
* @return string
*/
function renderFirst($tag = 'First') {
if ($this->total_rows == 0)
return FALSE;
if ($this->page == 1) {
return "$tag ";
} else {
return '<a href="' . $this->php_self . '?page=1&' . $this->append . '">' . $tag . '</a> ';
}
}
/**
* Display the link to the last page
*
* @access public
* @param string $tag Text string to be displayed as the link. Defaults to 'Last'
* @return string
*/
function renderLast($tag = 'Last') {
if ($this->total_rows == 0)
return FALSE;
if ($this->page == $this->max_pages) {
return $tag;
} else {
return ' <a href="' . $this->php_self . '?page=' . $this->max_pages . '&' . $this->append . '">' . $tag . '</a>';
}
}
/**
* Display the next link
*
* @access public
* @param string $tag Text string to be displayed as the link. Defaults to '>>'
* @return string
*/
function renderNext($tag = '>>') {
if ($this->total_rows == 0)
return FALSE;
if ($this->page < $this->max_pages) {
return '<a href="' . $this->php_self . '?page=' . ($this->page + 1) . '&' . $this->append . '">' . $tag . '</a>';
} else {
return $tag;
}
}
/**
* Display the previous link
*
* @access public
* @param string $tag Text string to be displayed as the link. Defaults to '<<'
* @return string
*/
function renderPrev($tag = '<<') {
if ($this->total_rows == 0)
return FALSE;
if ($this->page > 1) {
return ' <a href="' . $this->php_self . '?page=' . ($this->page - 1) . '&' . $this->append . '">' . $tag . '</a>';
} else {
return " $tag";
}
}
/**
* Display the page links
*
* @access public
* @return string
*/
function renderNav($prefix = '<span class="page_link">', $suffix = '</span>') {
if ($this->total_rows == 0)
return FALSE;
$batch = ceil($this->page / $this->links_per_page );
$end = $batch * $this->links_per_page;
if ($end == $this->page) {
//$end = $end + $this->links_per_page - 1;
//$end = $end + ceil($this->links_per_page/2);
}
if ($end > $this->max_pages) {
$end = $this->max_pages;
}
$start = $end - $this->links_per_page + 1;
$links = '';
for($i = $start; $i <= $end; $i ++) {
if ($i == $this->page) {
$links .= $prefix . " $i " . $suffix;
} else {
$links .= ' ' . $prefix . '<a href="' . $this->php_self . '?page=' . $i . '&' . $this->append . '">' . $i . '</a>' . $suffix . ' ';
}
}
return $links;
}
/**
* Display full pagination navigation
*
* @access public
* @return string
*/
function renderFullNav() {
return $this->renderFirst() . ' ' . $this->renderPrev() . ' ' . $this->renderNav() . ' ' . $this->renderNext() . ' ' . $this->renderLast();
}
/**
* Set debug mode
*
* @access public
* @param bool $debug Set to TRUE to enable debug messages
* @return void
*/
function setDebug($debug) {
$this->debug = $debug;
}
}
?>
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