I am in the process of changing over from mysql to PDO. How ever I am running into a few problems when I am trying to add page numbers to display the query results.
Here is the code:
$query_RS_Search = "SELECT * FROM products WHERE Category LIKE :category AND hidden = 'no'";
if (($_GET['Category']) =='Keyboards'){
switch( $_GET['price'] ){
case '':
$query_RS_Search .= ' AND Category != "Recent Keyboards" ORDER BY price ASC';
break;
case '0-500':
$query_RS_Search .= ' AND Category != "Recent Keyboards" AND products.price BETWEEN 0 AND 500 ORDER BY Keysound_price ASC';
break;
case '500-1000':
$query_RS_Search .= ' AND Category != "Recent Keyboards" AND products.price BETWEEN 500 AND 1000 ORDER BY price ASC';
break;
}
}else{switch( $_GET['price'] ){
case '':
$query_RS_Search .= ' ORDER BY price ASC';
break;
case '0-500':
$query_RS_Search .= ' AND products.price BETWEEN 0 AND 500 ORDER BY price ASC';
break;
case '500-1000':
$query_RS_Search .= ' AND products.price BETWEEN 500 AND 1000 ORDER BY Keysound_price ASC';
break;
}
}
$RS_Search = $conn->prepare($query_RS_Search) or die(mysql_error());
$RS_Search->bindValue(':category', '%' . str_replace('-', ' ',$_GET['Category']) . '%' );
$RS_Search->execute();
$row_RS_Search = $RS_Search->fetch();
$row = $RS_Search->rowCount();
// Here we have the total row count
$rows = $row[0];
// This is the number of results we want displayed per page
$page_rows = 7;
// This tells us the page number of our last page
$last = ceil($rows/$page_rows);
// This makes sure $last cannot be less than 1
if($last < 1){
$last = 1;
}
// Establish the $pagenum variable
$pagenum = 1;
// Get pagenum from URL vars if it is present, else it is = 1
if(isset($_GET['pn'])){
$pagenum = preg_replace('#[^0-9]#', '', $_GET['pn']);
}
// This makes sure the page number isn't below 1, or more than our $last page
if ($pagenum < 1) {
$pagenum = 1;
} else if ($pagenum > $last) {
$pagenum = $last;
}
// This sets the range of rows to query for the chosen $pagenum
$limit = 'LIMIT ' .($pagenum - 1) * $page_rows .',' .$page_rows;
// This is your query again, it is for grabbing just one page worth of rows by applying $limit
$RS_Search = $conn->prepare($query_RS_Search.$limit) or die(mysql_error());
$RS_Search->bindValue(':category', '%' . str_replace('-', ' ',$_GET['Category']) . '%' );
$RS_Search->execute();
// This shows the user what page they are on, and the total number of pages
$textline1 = "Testimonials (<b>$rows</b>)";
$textline2 = "Page <b>$pagenum</b> of <b>$last</b>";
// Establish the $paginationCtrls variable
$paginationCtrls = '';
// If there is more than 1 page worth of results
if($last != 1){
/* First we check if we are on page one. If we are then we don't need a link to
the previous page or the first page so we do nothing. If we aren't then we
generate links to the first page, and to the previous page. */
if ($pagenum > 1) {
$previous = $pagenum - 1;
$paginationCtrls .= 'Previous ';
// Render clickable number links that should appear on the left of the target page number
for($i = $pagenum-4; $i < $pagenum; $i++){
if($i > 0){
$paginationCtrls .= ''.$i.' ';
}
}
}
// Render the target page number, but without it being a link
$paginationCtrls .= ''.$pagenum.' ';
// Render clickable number links that should appear on the right of the target page number
for($i = $pagenum+1; $i <= $last; $i++){
$paginationCtrls .= ''.$i.' ';
if($i >= $pagenum+4){
break;
}
}
// This does the same as above, only checking if we are on the last page, and then generating the "Next"
if ($pagenum != $last) {
$next = $pagenum + 1;
$paginationCtrls .= ' Next ';
}
}
This only results one row when trying to display as follows:
<?php do { ?>
<?php echo $row_RS_Search['Manufacturer']; ?> <?php echo $row_RS_Search['Model']; ?> in <?php echo $row_RS_Search['Color']; ?>
<?php } while ($row_RS_Search = $RS_Search->fetch()); ?>
<div id="pagination_controls"><?php echo $paginationCtrls; ?></div>
I would like to display 7 rows per page.
Any help welcome
There is missing space in your $limit string which you concatenate later to prepare() statement.
// This sets the range of rows to query for the chosen $pagenum
$limit = ' LIMIT ' .($pagenum - 1) * $page_rows .',' .$page_rows;
Related
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I have rows of data coming from database, I would like to have a table with a simple pagination, what is the easiest way of doing it?
I'd be glad if anyone could provide.
This is a mix of HTML and code but it's pretty basic, easy to understand and should be fairly simple to decouple to suit your needs I think.
try {
// Find out how many items are in the table
$total = $dbh->query('
SELECT
COUNT(*)
FROM
table
')->fetchColumn();
// How many items to list per page
$limit = 20;
// How many pages will there be
$pages = ceil($total / $limit);
// What page are we currently on?
$page = min($pages, filter_input(INPUT_GET, 'page', FILTER_VALIDATE_INT, array(
'options' => array(
'default' => 1,
'min_range' => 1,
),
)));
// Calculate the offset for the query
$offset = ($page - 1) * $limit;
// Some information to display to the user
$start = $offset + 1;
$end = min(($offset + $limit), $total);
// The "back" link
$prevlink = ($page > 1) ? '« ‹' : '<span class="disabled">«</span> <span class="disabled">‹</span>';
// The "forward" link
$nextlink = ($page < $pages) ? '› »' : '<span class="disabled">›</span> <span class="disabled">»</span>';
// Display the paging information
echo '<div id="paging"><p>', $prevlink, ' Page ', $page, ' of ', $pages, ' pages, displaying ', $start, '-', $end, ' of ', $total, ' results ', $nextlink, ' </p></div>';
// Prepare the paged query
$stmt = $dbh->prepare('
SELECT
*
FROM
table
ORDER BY
name
LIMIT
:limit
OFFSET
:offset
');
// Bind the query params
$stmt->bindParam(':limit', $limit, PDO::PARAM_INT);
$stmt->bindParam(':offset', $offset, PDO::PARAM_INT);
$stmt->execute();
// Do we have any results?
if ($stmt->rowCount() > 0) {
// Define how we want to fetch the results
$stmt->setFetchMode(PDO::FETCH_ASSOC);
$iterator = new IteratorIterator($stmt);
// Display the results
foreach ($iterator as $row) {
echo '<p>', $row['name'], '</p>';
}
} else {
echo '<p>No results could be displayed.</p>';
}
} catch (Exception $e) {
echo '<p>', $e->getMessage(), '</p>';
}
Some of the tutorials I found that are easy to understand are:
http://www.phpfreaks.com/tutorial/basic-pagination
It makes way more sense to break up your list into page-sized chunks, and only query your database one chunk at a time. This drastically reduces server processing time and page load time, as well as gives your user smaller pieces of info to digest, so he doesn't choke on whatever crap you're trying to feed him. The act of doing this is called pagination.
A basic pagination routine seems long and scary at first, but once you
close your eyes, take a deep breath, and look at each piece of the
script individually, you will find it's actually pretty easy stuff
The script:
// find out how many rows are in the table
$sql = "SELECT COUNT(*) FROM numbers";
$result = mysql_query($sql, $conn) or trigger_error("SQL", E_USER_ERROR);
$r = mysql_fetch_row($result);
$numrows = $r[0];
// number of rows to show per page
$rowsperpage = 10;
// find out total pages
$totalpages = ceil($numrows / $rowsperpage);
// get the current page or set a default
if (isset($_GET['currentpage']) && is_numeric($_GET['currentpage'])) {
// cast var as int
$currentpage = (int) $_GET['currentpage'];
} else {
// default page num
$currentpage = 1;
} // end if
// if current page is greater than total pages...
if ($currentpage > $totalpages) {
// set current page to last page
$currentpage = $totalpages;
} // end if
// if current page is less than first page...
if ($currentpage < 1) {
// set current page to first page
$currentpage = 1;
} // end if
// the offset of the list, based on current page
$offset = ($currentpage - 1) * $rowsperpage;
// get the info from the db
$sql = "SELECT id, number FROM numbers LIMIT $offset, $rowsperpage";
$result = mysql_query($sql, $conn) or trigger_error("SQL", E_USER_ERROR);
// while there are rows to be fetched...
while ($list = mysql_fetch_assoc($result)) {
// echo data
echo $list['id'] . " : " . $list['number'] . "<br />";
} // end while
/****** build the pagination links ******/
// range of num links to show
$range = 3;
// if not on page 1, don't show back links
if ($currentpage > 1) {
// show << link to go back to page 1
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=1'><<</a> ";
// get previous page num
$prevpage = $currentpage - 1;
// show < link to go back to 1 page
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$prevpage'><</a> ";
} // end if
// loop to show links to range of pages around current page
for ($x = ($currentpage - $range); $x < (($currentpage + $range) + 1); $x++) {
// if it's a valid page number...
if (($x > 0) && ($x <= $totalpages)) {
// if we're on current page...
if ($x == $currentpage) {
// 'highlight' it but don't make a link
echo " [<b>$x</b>] ";
// if not current page...
} else {
// make it a link
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$x'>$x</a> ";
} // end else
} // end if
} // end for
// if not on last page, show forward and last page links
if ($currentpage != $totalpages) {
// get next page
$nextpage = $currentpage + 1;
// echo forward link for next page
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$nextpage'>></a> ";
// echo forward link for lastpage
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$totalpages'>>></a> ";
} // end if
/****** end build pagination links ******/
?>
http://www.tonymarston.net/php-mysql/pagination.html
This tutorial is intended for developers who wish to give their users the ability to step through a large number of database rows in manageable chunks instead of the whole lot in one go.
<?php
// Custom PHP MySQL Pagination Tutorial and Script
// You have to put your mysql connection data and alter the SQL queries(both queries)
mysql_connect("DATABASE_Host_Here","DATABASE_Username_Here","DATABASE_Password_Here") or die (mysql_error());
mysql_select_db("DATABASE_Name_Here") or die (mysql_error());
////////////// QUERY THE MEMBER DATA INITIALLY LIKE YOU NORMALLY WOULD
$sql = mysql_query("SELECT id, firstname, country FROM myTable ORDER BY id ASC");
//////////////////////////////////// Pagination Logic ////////////////////////////////////////////////////////////////////////
$nr = mysql_num_rows($sql); // Get total of Num rows from the database query
if (isset($_GET['pn'])) { // Get pn from URL vars if it is present
$pn = preg_replace('#[^0-9]#i', '', $_GET['pn']); // filter everything but numbers for security(new)
//$pn = ereg_replace("[^0-9]", "", $_GET['pn']); // filter everything but numbers for security(deprecated)
} else { // If the pn URL variable is not present force it to be value of page number 1
$pn = 1;
}
//This is where we set how many database items to show on each page
$itemsPerPage = 10;
// Get the value of the last page in the pagination result set
$lastPage = ceil($nr / $itemsPerPage);
// Be sure URL variable $pn(page number) is no lower than page 1 and no higher than $lastpage
if ($pn < 1) { // If it is less than 1
$pn = 1; // force if to be 1
} else if ($pn > $lastPage) { // if it is greater than $lastpage
$pn = $lastPage; // force it to be $lastpage's value
}
// This creates the numbers to click in between the next and back buttons
// This section is explained well in the video that accompanies this script
$centerPages = "";
$sub1 = $pn - 1;
$sub2 = $pn - 2;
$add1 = $pn + 1;
$add2 = $pn + 2;
if ($pn == 1) {
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
$centerPages .= ' ' . $add1 . ' ';
} else if ($pn == $lastPage) {
$centerPages .= ' ' . $sub1 . ' ';
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
} else if ($pn > 2 && $pn < ($lastPage - 1)) {
$centerPages .= ' ' . $sub2 . ' ';
$centerPages .= ' ' . $sub1 . ' ';
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
$centerPages .= ' ' . $add1 . ' ';
$centerPages .= ' ' . $add2 . ' ';
} else if ($pn > 1 && $pn < $lastPage) {
$centerPages .= ' ' . $sub1 . ' ';
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
$centerPages .= ' ' . $add1 . ' ';
}
// This line sets the "LIMIT" range... the 2 values we place to choose a range of rows from database in our query
$limit = 'LIMIT ' .($pn - 1) * $itemsPerPage .',' .$itemsPerPage;
// Now we are going to run the same query as above but this time add $limit onto the end of the SQL syntax
// $sql2 is what we will use to fuel our while loop statement below
$sql2 = mysql_query("SELECT id, firstname, country FROM myTable ORDER BY id ASC $limit");
//////////////////////////////// END Pagination Logic ////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////// Pagination Display Setup /////////////////////////////////////////////////////////////////////
$paginationDisplay = ""; // Initialize the pagination output variable
// This code runs only if the last page variable is ot equal to 1, if it is only 1 page we require no paginated links to display
if ($lastPage != "1"){
// This shows the user what page they are on, and the total number of pages
$paginationDisplay .= 'Page <strong>' . $pn . '</strong> of ' . $lastPage. ' ';
// If we are not on page 1 we can place the Back button
if ($pn != 1) {
$previous = $pn - 1;
$paginationDisplay .= ' Back ';
}
// Lay in the clickable numbers display here between the Back and Next links
$paginationDisplay .= '<span class="paginationNumbers">' . $centerPages . '</span>';
// If we are not on the very last page we can place the Next button
if ($pn != $lastPage) {
$nextPage = $pn + 1;
$paginationDisplay .= ' Next ';
}
}
///////////////////////////////////// END Pagination Display Setup ///////////////////////////////////////////////////////////////////////////
// Build the Output Section Here
$outputList = '';
while($row = mysql_fetch_array($sql2)){
$id = $row["id"];
$firstname = $row["firstname"];
$country = $row["country"];
$outputList .= '<h1>' . $firstname . '</h1><h2>' . $country . ' </h2><hr />';
} // close while loop
?>
<html>
<head>
<title>Simple Pagination</title>
</head>
<body>
<div style="margin-left:64px; margin-right:64px;">
<h2>Total Items: <?php echo $nr; ?></h2>
</div>
<div style="margin-left:58px; margin-right:58px; padding:6px; background-color:#FFF; border:#999 1px solid;"><?php echo $paginationDisplay; ?></div>
<div style="margin-left:64px; margin-right:64px;"><?php print "$outputList"; ?></div>
<div style="margin-left:58px; margin-right:58px; padding:6px; background-color:#FFF; border:#999 1px solid;"><?php echo $paginationDisplay; ?></div>
</body>
</html>
I got the pagination controls and my search results shows 5 results fine. but when I click the second page, all of the search results go away. even though for what I searched, there is more than 5 results in the database. if you would please see the update code in just a second. here is my email bud just in case: raminrahim [at] hotmail [dot] com Please. thanks.
<?php
$paginationCTRLS = '';
$textline1 = '';
$textline2 = '';
$list = '';
if (isset($_GET['search_item'])) {
$search_item = $_GET['search_item'];
if (!empty($search_item)) {
if (strlen($search_item)>=3) {
// This query is just to get total count of rows
$query= "SELECT COUNT(item_id) FROM items"; // $sql
$query_run = mysqli_query($mysqli, $query); // $query
$query_row = mysqli_fetch_row($query_run); // $row
// $rows: here we have the total row count
$rows = $query_row[0]; // pgRows = row[]
// This is the number of results we want displayed per page
$page_rows = 5;
// This tells us the page number of our last page
$last = ceil($rows/$page_rows);
// This makes sure last cannot be less than 1.
if ($last < 1)
{
$last = 1;
}
// Establish the $pagenum variables
$pagenum = 1;
// Get pagenum from URL vars if it present, else it is = 1
if(isset($_GET['pn'])){
$pagenum = preg_replace('#[^0-9]#', '', $_GET['pn']);
}
if ($pagenum < 1) {
$pagenum = 1;
} else if ($pagenum > $last) {
$pagenum = $last;
}
$limit = 'LIMIT ' .($pagenum - 1) * $page_rows .',' .$page_rows;
$query = "SELECT `item_id`, `featured_Items` FROM `items` WHERE
`featured_Items` LIKE
'%".mysql_real_escape_string($search_item)."%' $limit";
$query_run = mysqli_query($mysqli, $query);
$query_num_rows = mysqli_num_rows($query_run);
if ($query_num_rows>=1)
{
echo $query_num_rows. ' results found:<br>' . '<br>';
while ($query_row = mysqli_fetch_assoc($query_run))
{
echo $query_row['featured_Items'].'<br>' . '<hr>';
}
}
else
{
echo 'No result found' . '<hr>';
}
} else {
echo 'Not enough keywords to predict your search' . '<hr>';
}
}
$textline1 = "Result:" . '(<b>$rows</br>)';
$textline2 = "Page <b>" . '$pagenum' . "</b> of <b>" . '$last' . "</b>";
if ($last != 1){
if ($pagenum > 1) {
$previous = $pagenum - 1;
$paginationCTRLS .= 'Back ';
for($i = $pagenum-4; $i < $pagenum; $i++){
if($i>0){
$paginationCTRLS .= ''.$i.' ';
}
}
}
$paginationCTRLS .= ''.$pagenum.' ';
for ($i = $pagenum+1; $i <= $last; $i++) {
$paginationCTRLS .= ''.$i.' ';
if($i >= $pagenum+4) {
break;
}
}
if ($pagenum != $last) {
$next = $pagenum +1;
$paginationCTRLS .= ' Next ';
}
}
$list = '';
while($row = mysqli_fetch_array($query_run, MYSQLI_ASSOC)) {
$id = $row["item_id"];
$availablesITEMS = $row["featured_Items"];
$list .= '<p>'.$availablesITEMS.'<br>.</p>';
}
}
echo $list . '<br/>';
echo $paginationCTRLS . '<br/>';
?>
You need to set up your query to be able to accept an start point.
Like this:
LIMIT 0, 10
Where the first number corresponds to the starting row your results are going to be obtained from, and the second number equals the amount of results you're going to get from that point on.
So in the sense of your code you'd have to set it up as:
$query = "SELECT `item_id`, `featured_Items` FROM `items` WHERE
`featured_Items` LIKE
'%".mysql_real_escape_string($search_item)."%'
LIMIT ".($pagenum-1)*5.",5";
Let me know if that clears up your doubt.
Edit:
As for enabling pagination through your means, simply change the method in your form to be a GET statement.
<form action="your_page.php" method="get">
Then from your code you can use the
$_GET['search_item']
method instead of POST. This in turn enables you to use those variables on your anchor tags for your pagination.
$paginationCTRLS .= ''.$i.' ';`
Edit2:
You have this piece of code:
for($i = $pagenum-4; $i < $pagenum; $i++){
if($i>0){
$paginationCTRLS .= ''.$i.' ';
}
}
This will always at any point output the same number of pages, which is 5.
Now what you need is something that outputs only the pagination that you really need. So for example setting up this variable:
$pages = ceil($row/$page_rows);
Gives you your total amount of pages, then you can iterate to it:
for($i = 1; $i <= $pages; $i++){
if($i>0){
$paginationCTRLS .= ''.$i.' ';
}
}
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Closed 8 years ago.
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I have rows of data coming from database, I would like to have a table with a simple pagination, what is the easiest way of doing it?
I'd be glad if anyone could provide.
This is a mix of HTML and code but it's pretty basic, easy to understand and should be fairly simple to decouple to suit your needs I think.
try {
// Find out how many items are in the table
$total = $dbh->query('
SELECT
COUNT(*)
FROM
table
')->fetchColumn();
// How many items to list per page
$limit = 20;
// How many pages will there be
$pages = ceil($total / $limit);
// What page are we currently on?
$page = min($pages, filter_input(INPUT_GET, 'page', FILTER_VALIDATE_INT, array(
'options' => array(
'default' => 1,
'min_range' => 1,
),
)));
// Calculate the offset for the query
$offset = ($page - 1) * $limit;
// Some information to display to the user
$start = $offset + 1;
$end = min(($offset + $limit), $total);
// The "back" link
$prevlink = ($page > 1) ? '« ‹' : '<span class="disabled">«</span> <span class="disabled">‹</span>';
// The "forward" link
$nextlink = ($page < $pages) ? '› »' : '<span class="disabled">›</span> <span class="disabled">»</span>';
// Display the paging information
echo '<div id="paging"><p>', $prevlink, ' Page ', $page, ' of ', $pages, ' pages, displaying ', $start, '-', $end, ' of ', $total, ' results ', $nextlink, ' </p></div>';
// Prepare the paged query
$stmt = $dbh->prepare('
SELECT
*
FROM
table
ORDER BY
name
LIMIT
:limit
OFFSET
:offset
');
// Bind the query params
$stmt->bindParam(':limit', $limit, PDO::PARAM_INT);
$stmt->bindParam(':offset', $offset, PDO::PARAM_INT);
$stmt->execute();
// Do we have any results?
if ($stmt->rowCount() > 0) {
// Define how we want to fetch the results
$stmt->setFetchMode(PDO::FETCH_ASSOC);
$iterator = new IteratorIterator($stmt);
// Display the results
foreach ($iterator as $row) {
echo '<p>', $row['name'], '</p>';
}
} else {
echo '<p>No results could be displayed.</p>';
}
} catch (Exception $e) {
echo '<p>', $e->getMessage(), '</p>';
}
Some of the tutorials I found that are easy to understand are:
http://www.phpfreaks.com/tutorial/basic-pagination
It makes way more sense to break up your list into page-sized chunks, and only query your database one chunk at a time. This drastically reduces server processing time and page load time, as well as gives your user smaller pieces of info to digest, so he doesn't choke on whatever crap you're trying to feed him. The act of doing this is called pagination.
A basic pagination routine seems long and scary at first, but once you
close your eyes, take a deep breath, and look at each piece of the
script individually, you will find it's actually pretty easy stuff
The script:
// find out how many rows are in the table
$sql = "SELECT COUNT(*) FROM numbers";
$result = mysql_query($sql, $conn) or trigger_error("SQL", E_USER_ERROR);
$r = mysql_fetch_row($result);
$numrows = $r[0];
// number of rows to show per page
$rowsperpage = 10;
// find out total pages
$totalpages = ceil($numrows / $rowsperpage);
// get the current page or set a default
if (isset($_GET['currentpage']) && is_numeric($_GET['currentpage'])) {
// cast var as int
$currentpage = (int) $_GET['currentpage'];
} else {
// default page num
$currentpage = 1;
} // end if
// if current page is greater than total pages...
if ($currentpage > $totalpages) {
// set current page to last page
$currentpage = $totalpages;
} // end if
// if current page is less than first page...
if ($currentpage < 1) {
// set current page to first page
$currentpage = 1;
} // end if
// the offset of the list, based on current page
$offset = ($currentpage - 1) * $rowsperpage;
// get the info from the db
$sql = "SELECT id, number FROM numbers LIMIT $offset, $rowsperpage";
$result = mysql_query($sql, $conn) or trigger_error("SQL", E_USER_ERROR);
// while there are rows to be fetched...
while ($list = mysql_fetch_assoc($result)) {
// echo data
echo $list['id'] . " : " . $list['number'] . "<br />";
} // end while
/****** build the pagination links ******/
// range of num links to show
$range = 3;
// if not on page 1, don't show back links
if ($currentpage > 1) {
// show << link to go back to page 1
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=1'><<</a> ";
// get previous page num
$prevpage = $currentpage - 1;
// show < link to go back to 1 page
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$prevpage'><</a> ";
} // end if
// loop to show links to range of pages around current page
for ($x = ($currentpage - $range); $x < (($currentpage + $range) + 1); $x++) {
// if it's a valid page number...
if (($x > 0) && ($x <= $totalpages)) {
// if we're on current page...
if ($x == $currentpage) {
// 'highlight' it but don't make a link
echo " [<b>$x</b>] ";
// if not current page...
} else {
// make it a link
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$x'>$x</a> ";
} // end else
} // end if
} // end for
// if not on last page, show forward and last page links
if ($currentpage != $totalpages) {
// get next page
$nextpage = $currentpage + 1;
// echo forward link for next page
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$nextpage'>></a> ";
// echo forward link for lastpage
echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$totalpages'>>></a> ";
} // end if
/****** end build pagination links ******/
?>
http://www.tonymarston.net/php-mysql/pagination.html
This tutorial is intended for developers who wish to give their users the ability to step through a large number of database rows in manageable chunks instead of the whole lot in one go.
<?php
// Custom PHP MySQL Pagination Tutorial and Script
// You have to put your mysql connection data and alter the SQL queries(both queries)
mysql_connect("DATABASE_Host_Here","DATABASE_Username_Here","DATABASE_Password_Here") or die (mysql_error());
mysql_select_db("DATABASE_Name_Here") or die (mysql_error());
////////////// QUERY THE MEMBER DATA INITIALLY LIKE YOU NORMALLY WOULD
$sql = mysql_query("SELECT id, firstname, country FROM myTable ORDER BY id ASC");
//////////////////////////////////// Pagination Logic ////////////////////////////////////////////////////////////////////////
$nr = mysql_num_rows($sql); // Get total of Num rows from the database query
if (isset($_GET['pn'])) { // Get pn from URL vars if it is present
$pn = preg_replace('#[^0-9]#i', '', $_GET['pn']); // filter everything but numbers for security(new)
//$pn = ereg_replace("[^0-9]", "", $_GET['pn']); // filter everything but numbers for security(deprecated)
} else { // If the pn URL variable is not present force it to be value of page number 1
$pn = 1;
}
//This is where we set how many database items to show on each page
$itemsPerPage = 10;
// Get the value of the last page in the pagination result set
$lastPage = ceil($nr / $itemsPerPage);
// Be sure URL variable $pn(page number) is no lower than page 1 and no higher than $lastpage
if ($pn < 1) { // If it is less than 1
$pn = 1; // force if to be 1
} else if ($pn > $lastPage) { // if it is greater than $lastpage
$pn = $lastPage; // force it to be $lastpage's value
}
// This creates the numbers to click in between the next and back buttons
// This section is explained well in the video that accompanies this script
$centerPages = "";
$sub1 = $pn - 1;
$sub2 = $pn - 2;
$add1 = $pn + 1;
$add2 = $pn + 2;
if ($pn == 1) {
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
$centerPages .= ' ' . $add1 . ' ';
} else if ($pn == $lastPage) {
$centerPages .= ' ' . $sub1 . ' ';
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
} else if ($pn > 2 && $pn < ($lastPage - 1)) {
$centerPages .= ' ' . $sub2 . ' ';
$centerPages .= ' ' . $sub1 . ' ';
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
$centerPages .= ' ' . $add1 . ' ';
$centerPages .= ' ' . $add2 . ' ';
} else if ($pn > 1 && $pn < $lastPage) {
$centerPages .= ' ' . $sub1 . ' ';
$centerPages .= ' <span class="pagNumActive">' . $pn . '</span> ';
$centerPages .= ' ' . $add1 . ' ';
}
// This line sets the "LIMIT" range... the 2 values we place to choose a range of rows from database in our query
$limit = 'LIMIT ' .($pn - 1) * $itemsPerPage .',' .$itemsPerPage;
// Now we are going to run the same query as above but this time add $limit onto the end of the SQL syntax
// $sql2 is what we will use to fuel our while loop statement below
$sql2 = mysql_query("SELECT id, firstname, country FROM myTable ORDER BY id ASC $limit");
//////////////////////////////// END Pagination Logic ////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////// Pagination Display Setup /////////////////////////////////////////////////////////////////////
$paginationDisplay = ""; // Initialize the pagination output variable
// This code runs only if the last page variable is ot equal to 1, if it is only 1 page we require no paginated links to display
if ($lastPage != "1"){
// This shows the user what page they are on, and the total number of pages
$paginationDisplay .= 'Page <strong>' . $pn . '</strong> of ' . $lastPage. ' ';
// If we are not on page 1 we can place the Back button
if ($pn != 1) {
$previous = $pn - 1;
$paginationDisplay .= ' Back ';
}
// Lay in the clickable numbers display here between the Back and Next links
$paginationDisplay .= '<span class="paginationNumbers">' . $centerPages . '</span>';
// If we are not on the very last page we can place the Next button
if ($pn != $lastPage) {
$nextPage = $pn + 1;
$paginationDisplay .= ' Next ';
}
}
///////////////////////////////////// END Pagination Display Setup ///////////////////////////////////////////////////////////////////////////
// Build the Output Section Here
$outputList = '';
while($row = mysql_fetch_array($sql2)){
$id = $row["id"];
$firstname = $row["firstname"];
$country = $row["country"];
$outputList .= '<h1>' . $firstname . '</h1><h2>' . $country . ' </h2><hr />';
} // close while loop
?>
<html>
<head>
<title>Simple Pagination</title>
</head>
<body>
<div style="margin-left:64px; margin-right:64px;">
<h2>Total Items: <?php echo $nr; ?></h2>
</div>
<div style="margin-left:58px; margin-right:58px; padding:6px; background-color:#FFF; border:#999 1px solid;"><?php echo $paginationDisplay; ?></div>
<div style="margin-left:64px; margin-right:64px;"><?php print "$outputList"; ?></div>
<div style="margin-left:58px; margin-right:58px; padding:6px; background-color:#FFF; border:#999 1px solid;"><?php echo $paginationDisplay; ?></div>
</body>
</html>
I am using this coed in PHP to show next and previous buttons for records in a mysql database:
$sql="SELECT * from customer";
$rs=mysql_query($sql,$conn) or die(mysql_error());
$MaxRowsPerPage = 25;
$total_records = mysql_num_rows($rs);
$total_pages = ceil($total_records / $MaxRowsPerPage);
if(isset($_GET["page"])) {
$page = $_GET["page"];
} else {
$page=1;
}
$start_from = ($page-1) * $MaxRowsPerPage;
$sql.=" LIMIT $start_from, $MaxRowsPerPage";
I am echoing $total_records to show the total amount, how can i show the number from and to on the current page. for example, on page 1 it will be showing records 1 to 25 (because max rows per page is 25) and then page 2 will be showing records 26 to 50 and so on...
There a are many ways of doing this, but here's a simple pagination example I made. It will also show 1-25, 26-50 etc. It's heavily commented so it should be easy to understand.
<?php
// Connect to database
include 'includes/db_connect.php';
// Find total number of rows in table
$result = mysql_query("SELECT COUNT(*) FROM example_table");
$row = mysql_fetch_array($result);
$total_rows = $row[0];
// Set rows per page
$rows_per_page = 25;
// Calculate total number of pages
$total_pages = ceil($total_rows / $rows_per_page);
// Get current page
$current_page = (isset($_GET['p']) && $_GET['p'] > 0) ? (int) $_GET['p'] : 1;
// If current page is greater than last page, set it to last.
if ($current_page > $total_pages)
$current_page = $total_pages;
// Set starting post
$offset = ($current_page - 1) * $rows_per_page;
// Get rows from database
$result = mysql_query("SELECT * FROM example_table LIMIT $offset, $rows_per_page");
// Print rows
echo '<hr>';
while($row = mysql_fetch_array($result))
{
echo $row['id'].'<br />';
echo $row['text'];
echo '<hr>';
}
// Build navigation
// Range of pages on each side of current page in navigation
$range = 4;
// Create navigation link for previous and first page.
if ($current_page > 1)
{
$back = $current_page - 1;
echo ' PREV ';
if ($current_page > ($range + 1))
echo ' 1... ';
}
else
echo ' PREV ';
// Create page links, based on chosen range.
for ($i = $current_page - $range; $i < ($current_page + $range) + 1; $i++)
{
if ($i > 0 && $i <= $total_pages)
if ($i == $current_page)
echo ' [<strong>'.$i.'</strong>] ';
else
echo ' '.$i.' ';
}
// Create navigation link for next and last page.
if ($current_page != $total_pages)
{
$next = $current_page + 1;
if (($current_page + $range) < $total_pages)
echo ' ...'.$total_pages.' ';
echo ' NEXT ';
}
else
echo ' NEXT ';
?>
solved ..basically as hinted by YourCommonSense, using the get variable to pass through the search query so i added these chunck of code in on top and edited the linkable url to passthrough the variable.
if (isset($_GET['searchquery'])){
$searchquery=$_GET['searchquery'];
$stmt = $myConnection->prepare('SELECT COUNT(id) FROM products WHERE product_name LIKE ? OR details LIKE ? OR category LIKE ? OR subcategory LIKE ? OR price LIKE ?');
$param = "%$searchquery%";
$stmt->bind_param('sssss', $param, $param, $param, $param, $param);
$stmt->execute();
/* store result */
$result=$stmt->bind_result($id);
$rows=array();
while ($stmt->fetch()){
$rows[]=array(
'id' => $id
);
}
$rows=$id;
// This is the number of results we want displayed per page
$page_rows = 4;
// This tells us the page number of our last page
$last = ceil($rows/$page_rows);
// This makes sure $last cannot be less than 1
if($last < 1){
$last = 1;
}
// Establish the $pagenum variable
$pagenum = 1;
// Get pagenum from URL vars if it is present, else it is = 1
if(isset($_GET['pn'])){
$pagenum = preg_replace('#[^0-9]#', '', $_GET['pn']);
}
// This makes sure the page number isn't below 1, or more than our $last page
if ($pagenum < 1) {
$pagenum = 1;
} else if ($pagenum > $last) {
$pagenum = $last;
}
$stmt=$myConnection->prepare('SELECT id,product_name,price FROM products WHERE product_name LIKE ? OR details LIKE ? OR category LIKE ? OR subcategory LIKE ? OR price LIKE ? LIMIT ?,?');
$begin= ($pagenum - 1) * $page_rows;
$end= $page_rows;
$stmt->bind_param('sssssii', $param, $param, $param, $param, $param,$begin,$end);
$stmt->execute();
/* store result */
$stmt->store_result();
/* get the row count */
$count = $stmt->num_rows;
if ($count >= 1) {
$stmt->bind_result($id, $product_name, $price);
$search_output = "<hr />$count results for <strong>$searchquery</strong><hr />";
$textline1 = "<h4><center>Total of <b>$rows</b> items in this section</center></h4>";
$textline2 = "Page <b>$pagenum</b> of <b>$last</b>";
// Establish the $paginationCtrls variable
$paginationCtrls = '';
// If there is more than 1 page worth of results
if($last != 1){
/* First we check if we are on page one. If we are then we don't need a link to
the previous page or the first page so we do nothing. If we aren't then we
generate links to the first page, and to the previous page. */
if ($pagenum > 1) {
$previous = $pagenum - 1;
$paginationCtrls .= 'Previous ';
// Render clickable number links that should appear on the left of the target page number
for($i = $pagenum-4; $i < $pagenum; $i++){
if($i > 0){
$paginationCtrls .= ''.$i.' ';
}
}
}
// Render the target page number, but without it being a link
$paginationCtrls .= ''.$pagenum.' ';
// Render clickable number links that should appear on the right of the target page number
for($i = $pagenum+1; $i <= $last; $i++){
$paginationCtrls .= ''.$i.' ';
if($i >= $pagenum+4){
break;
}
}
// This does the same as above, only checking if we are on the last page, and then generating the "Next"
if ($pagenum != $last) {
$next = $pagenum + 1;
$paginationCtrls .= ' Next ';
}
}
while ($stmt->fetch()) {
"$id, $product_name, $price";
$search_output .= "
<li><div class='product'>
<a href='product.php?id=$id' class='info'>
<span class='holder'>
<img src='inventory_images/$id.jpg' alt='$product_name' />
<span class='book-name'>$product_name</span>
</a>
<a href='product.php?id=$id' class='buy-btn'>RM<span class='price'>$price</span></a>
</div>
</li>
";
}
}
}
as mentioned in the question, i try to do my search result paginated. Everything else work, but the last little bit is when I click my paginatedCrls button go to next page or specific page, i loaded and show as a fresh new search. how do i fix this?
<?php
session_start();
$search_output = "";
if (empty($searchquery))
{ $search_output = "<hr />Please enter a search term in the above search box <hr />";}
if (isset($_POST['searchquery']) && $_POST['searchquery'] != "") {
$searchquery = preg_replace('/[^a-zA-Z0-9_ %\[\]\/\.\(\)%&-]/s', '', $_POST['searchquery']);
if ($_POST['filter1'] == "Products") {
require_once ("storescripts/connect_to_mysqli.php");
$stmt = $myConnection->prepare('SELECT COUNT(id) FROM products WHERE product_name LIKE ? OR details LIKE ? OR category LIKE ? OR subcategory LIKE ? OR price LIKE ?');
$param = "%$searchquery%";
$stmt->bind_param('sssss', $param, $param, $param, $param, $param);
$stmt->execute();
/* store result */
$result=$stmt->bind_result($id);
$rows=array();
while ($stmt->fetch()){
$rows[]=array(
'id' => $id
);
}
$rows=$id;
// This is the number of results we want displayed per page
$page_rows = 4;
// This tells us the page number of our last page
$last = ceil($rows/$page_rows);
// This makes sure $last cannot be less than 1
if($last < 1){
$last = 1;
}
// Establish the $pagenum variable
$pagenum = 1;
// Get pagenum from URL vars if it is present, else it is = 1
if(isset($_GET['pn'])){
$pagenum = preg_replace('#[^0-9]#', '', $_GET['pn']);
}
// This makes sure the page number isn't below 1, or more than our $last page
if ($pagenum < 1) {
$pagenum = 1;
} else if ($pagenum > $last) {
$pagenum = $last;
}
$stmt=$myConnection->prepare('SELECT id,product_name,price FROM products WHERE product_name LIKE ? OR details LIKE ? OR category LIKE ? OR subcategory LIKE ? OR price LIKE ? LIMIT ?,?');
$begin= ($pagenum - 1) * $page_rows;
$end= $page_rows;
$stmt->bind_param('sssssii', $param, $param, $param, $param, $param,$begin,$end);
$stmt->execute();
/* store result */
$stmt->store_result();
/* get the row count */
$count = $stmt->num_rows;
if ($count >= 1) {
$stmt->bind_result($id, $product_name, $price);
$search_output = "<hr />$count results for <strong>$searchquery</strong><hr />";
$textline1 = "<h4><center>Total of <b>$rows</b> items in this section</center></h4>";
$textline2 = "Page <b>$pagenum</b> of <b>$last</b>";
// Establish the $paginationCtrls variable
$paginationCtrls = '';
// If there is more than 1 page worth of results
if($last != 1){
/* First we check if we are on page one. If we are then we don't need a link to
the previous page or the first page so we do nothing. If we aren't then we
generate links to the first page, and to the previous page. */
if ($pagenum > 1) {
$previous = $pagenum - 1;
$paginationCtrls .= 'Previous ';
// Render clickable number links that should appear on the left of the target page number
for($i = $pagenum-4; $i < $pagenum; $i++){
if($i > 0){
$paginationCtrls .= ''.$i.' ';
}
}
}
// Render the target page number, but without it being a link
$paginationCtrls .= ''.$pagenum.' ';
// Render clickable number links that should appear on the right of the target page number
for($i = $pagenum+1; $i <= $last; $i++){
$paginationCtrls .= ''.$i.' ';
if($i >= $pagenum+4){
break;
}
}
// This does the same as above, only checking if we are on the last page, and then generating the "Next"
if ($pagenum != $last) {
$next = $pagenum + 1;
$paginationCtrls .= ' Next ';
}
}
while ($stmt->fetch()) {
"$id, $product_name, $price";
$search_output .= "
<li><div class='product'>
<a href='product.php?id=$id' class='info'>
<span class='holder'>
<img src='inventory_images/$id.jpg' alt='$product_name' />
<span class='book-name'>$product_name</span>
</a>
<a href='product.php?id=$id' class='buy-btn'>RM<span class='price'>$price</span></a>
</div>
</li>
";
}
} else {
$search_output = "<hr />0 results for <strong>$searchquery</strong><hr />";
}
} else {
$search_output = "<hr />0 results for <strong>$searchquery</strong><hr />";
}
}
?>
pass the 'searchquery' variable through from the url and get it back from the script
Learn MVC
You only pass the pagenumber to you pagination controlls, not the searchquery
Dont use $_SERVER['PHP_SELF']
Use proper escaping methods or validators instead of those preg_replaces to filter input