I cannot get the followin code to work. Keep getting an error Notice:undefined variable: start in ps_pagination.php on line 161. Below is my code for both pages. I have googled this but cannot figure out where the problem is, other people have used simailar code. Any help would be greatly appreciated.
----------ps_pagination.php code-------------------------------------------------------------------------------------------------
<?php
class PS_Pagination {
var $php_self;
var $rows_per_page; //Number of records to display per page
var $total_rows; //Total number of rows returned by the query
var $links_per_page; //Number of links to display per page
var $sql;
var $debug = false;
var $conn;
var $page;
var $max_pages;
var $offset;
/**
* 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 $links_per_page Number of links to display per page. Defaults to 5
*/
function PS_Pagination($connection, $sql, $rows_per_page = 10, $links_per_page = 5) {
$this->conn = $connection;
$this->sql = $sql;
$this->rows_per_page = $rows_per_page;
$this->links_per_page = $links_per_page;
$this->php_self = htmlspecialchars($_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() {
if(!$this->conn) {
if($this->debug) echo "MySQL connection missing<br />";
return false;
}
$all_rs = @mysql_query($this->sql);
if(!$all_rs) {
if($this->debug) echo "SQL query failed. Check your query.<br />";
return false;
}
$this->total_rows = mysql_num_rows($all_rs);
@mysql_close($all_rs);
$this->max_pages = ceil($this->total_rows/$this->rows_per_page);
//Check the page value just in case someone is trying to input an aribitrary value
if($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
$res = @mysql_query($this->sql." LIMIT {$this->offset}, {$this->rows_per_page}");
if(!$res) {
if($this->debug) echo "Pagination query failed. Check your query.<br />";
return false;
}
return $res;
}
/**
* 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->page == 1) {
return $tag;
}
else {
return '<a href="'.$this->php_self.'?page=1">'.$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->page == $this->max_pages) {
return $tag;
}
else {
return '<a href="'.$this->php_self.'?page='.$this->max_pages.'">'.$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->page < $this->max_pages) {
return '<a href="'.$this->php_self.'?page='.($this->page+1).'">'.$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($this->page > 1) {
return '<a href="'.$this->php_self.'?page='.($this->page-1).'">'.$tag.'</a>';
}
else {
return $tag;
}
}
/**
* Display the page links
*
* @access public
* @return string
*/
function renderNav() {
for($i=1;$i<=$this->max_pages;$i+=$this->links_per_page) {
if($this->page >= $i) {
$start = $i;
}
}
if($this->max_pages > $this->links_per_page) {
$end = $start+$this->links_per_page;
if($end > $this->max_pages) $end = $this->max_pages+1;
}
else {
$end = $this->max_pages;
}
$links = '';
for( $i=$start ; $i<$end ; $i++) {
if($i == $this->page) {
$links .= " $i ";
}
else {
$links .= ' <a href="'.$this->php_self.'index.php?menukey=11&page='.$i.'">'.$i.'</a> ';
}
}
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;
}
}
?>
---------------------paginate_customers.php code-------------------------------------------------------------------------------
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<meta name="keywords" content="" />
<meta name="description" content="" />
<title>IT-5334: PHP and MySQL</title>
<!-- <link href="default.css" rel="stylesheet" type="text/css" /> -->
</head>
<body>
<?php
//Include the PS_Pagination class
include('ps_pagination.php');
require_once ('mysqli_connect.php');
//Connect to mysql db
$conn = mysqli_connect('localhost', 'name', 'password');
$sql = 'SELECT * FROM customers ORDER by CustomerID';
mysqli_select_db($conn, 'database name');
$r = @mysqli_query($conn, $sql);
if(!$r) {
die(mysqli_error($conn));
}
//Create a PS_Pagination object
$countperpage = 20;
$pager = new PS_Pagination($conn,$sql,$countperpage,6);
//The paginate() function returns a mysql result set
$rs = $pager->paginate();
echo '<table align="center" cellspacing="0" cellpadding="0" border=1>
<tr>
<td align="left" colspan="13"><h1>Customers: