I'm trying to get pagination to work on my page, but running into a error:
mysql_result() expects parameter 1 to be resource, object given in
I think I need to use a mysqli command but can't seem to figure it out. Here is my code
$connect = mysqli_connect('localhost', 'root', 'password', 'vdb');
$per_page = 6;
$pages_query = mysqli_query($connect, "SELECT COUNT(id) FROM customers");
$pages = ceil(mysql_result($pages_query, 0) / $per_page);
$page = (isset($_GET['page'])) ? (int)$_GET['page'] : 1;
$start = ($page - 1) * $per_page;
$query = mysqli_query($connect, "SELECT cid, fname, lname,address, score FROM customers");
while ($query_row = mysqli_fetch_assoc($query)) {
$array[] = $query_row['fname'] . '<br />';
}
if($pages >= 1)
{
for($x=1; $x <= $pages; $x++)
{
echo '' .$x.'';
}
}
Thanks in Advance!
You are jumbling between mysql and mysqli
$pages_query = mysqli_query($connect, "SELECT COUNT(id) FROM customers"); // MySQLi
$pages = ceil(mysql_result($pages_query, 0) / $per_page); // MySQL
There should be mysqli_result instead of mysql_result. Never mix them up and use just mysqli_* functions.
// line 3 of code above
$pages = ceil(mysqli_result($pages_query, 0) / $per_page);
^^
Related
I am new to php so please be gentle. I have lookup up solutions within this forum on the exact same problem but am a little confused. I can't seem to figure out why the error
Call to undefined function mysqli_result() in line 10
keeps occurring.
Can anyone help please
<?php
include 'connection.php';
$per_page = 10;
$pages_query = mysqli_query($con,"SELECT COUNT('uniqueID') FROM 'business'");
$pages = mysqli_result($pages_query, 0) / $per_page;
$page = (isset($_GET['page'])) ? (int)$_GET['page'] : 1;
$start = ($page - 1) * $per_page;
$query = mysqli_query($con,"SELECT 'manu' FROM 'business' LIMIT $start $per_page");
while ($query_row = mysqli_fetch_assoc($query)) {
echo '<p>', $query_row['manu'] ,'</p>';
}
?>
Try like this
<?php
include 'connection.php';
$per_page = 10;
$pages_query = mysqli_query($con,"SELECT COUNT('uniqueID') FROM 'business'");
$result = mysqli_fetch_row($pages_query); // <----- added
$pages = $result[0] / $per_page; // <------- modified
$page = (isset($_GET['page'])) ? (int)$_GET['page'] : 1;
$start = ($page - 1) * $per_page;
$query = mysqli_query($con,"SELECT 'manu' FROM 'business' LIMIT $start $per_page");
while ($query_row = mysqli_fetch_assoc($query)) {
echo '<p>', $query_row['manu'] ,'</p>';
}
?>
<?php
include 'connection.php';
$per_page = 10;
$pages_query = mysqli_query($con,"SELECT COUNT('uniqueID') FROM 'business'");
$result = mysqli_fetch_row($pages_query); // <----- added
$pages = $result[0] / $per_page; // <------- modified
$page = (isset($_GET['page'])) ? (int)$_GET['page'] : 1;
$start = ($page - 1) * $per_page;
$query = mysqli_query($con,"SELECT 'manu' FROM 'business' LIMIT $start $per_page");
while ($query_row = mysqli_fetch_assoc($query)) {
echo '<p>'. $query_row['manu'] .'</p>';
}
?>
I have two php files:
1. functions.php
2. index.php
The functions.php file has a series of functions that query MySQL database to produce different result sets. For example, i have two functions; one that returns all data whose year 2016, and the other that returns all the data whose year is 2015.
For both queries i desire to have php pagination for the result sets returned. An example of the function that returns results for all data whose years are 2015 and 2016 looks like this:
function get2015(){
$con = dbConnect();
$refs_per_page = 20;
$query = "select * from mytable where year = 2015";
$sql=$con->prepare($query);
$sql->execute();
$total = $sql->rowCount();
$pages = ceil($total/$refs_per_page);
echo "$total <br>";
if (isset($_GET['page']) && is_numeric($_GET["page"])){
$page = (int) $_GET['page'];
}//endif
if($page =="" || $page ==1){
$page=0;
}
else{
$page = ($page * $refs_per_page)-$refs_per_page;
}
//
$query = "select * from mytable where year = 2015 limit $page, $refs_per_page";
$sql=$con->prepare($query);
$sql->execute();
$sql->setFetchMode(PDO::FETCH_ASSOC);
while ($row=$sql->fetch()){
$title = $row['title'];
$authors = $row['authors'];
echo "<b>$title</b>" . "<br>" . $authors . "<p>";
}
//
for($x=1; $x<=$pages; $x++){
?> <?php echo $x;?> <?php
}
}
//function get records for 2016
function get2016(){
$con = dbConnect();
$refs_per_page = 20;
$query = "select * from mytable where year = 2016";
$sql=$con->prepare($query);
$sql->execute();
$total = $sql->rowCount();
$pages = ceil($total/$refs_per_page);
echo "$total <br>";
if (isset($_GET['page']) && is_numeric($_GET["page"])){
$page = (int) $_GET['page'];
}//endif
if($page =="" || $page ==1){
$page=0;
}
else{
$page = ($page * $refs_per_page)-$refs_per_page;
}
//
$query = "select * from mytable where year = 2016 limit $page, $refs_per_page";
$sql=$con->prepare($query);
$sql->execute();
$sql->setFetchMode(PDO::FETCH_ASSOC);
while ($row=$sql->fetch()){
$title = $row['title'];
$authors = $row['authors'];
echo "<b>$title</b>" . "<br>" . $authors . "<p>";
}
//
for($x=1; $x<=$pages; $x++){
?> <?php echo $x;?> <?php
}
}
The code in index.php code looks like this
<?php
include "functions.php";
$page = $_GET["page"];
if($page){
if($page=="get2015"){
get2015();
}
if($page=="get2016"){
get2016();
}
}
?>
<html>
Archive<br>
2015<br>
2016<br>
</html>
<?php ?>
The first page renders okay but when i click on the second page the page goes blank. #Syed below has suggested the use of an offset variable, which while useful does the same thing as the $page variable in the code above. How do i get pagination to work? I highly suspect that the problem is how i am calling the pages on index.php
Your sould make $offset variable and minus 1 from it and then multiply by $per_page
For example
User in index.php your offset variable calculate like that.
// offset should be equal to 0 and query should be
// SELECT * FROM your_table WHERE year='2015' LIMIT 0, 20
(page=1 - 1) = 0 * $per_page = 20
User in index.php?page=2 your offset variable calculate like that.
// offset should be equal to 20 and query should be
// SELECT * FROM your_table WHERE year='2015' LIMIT 20, 20
(page=2 - 1) = 1 * $per_page = 20
// offset should be equal to 40 and query should be
// SELECT * FROM your_table WHERE year='2015' LIMIT 40, 20
(page=3 - 1) = 2 * $per_page = 40
$sql = sprintf("SELECT COUNT(*) FROM your_table WHERE year='%s'", $_GET['year']);
// Query to database and store in pages variable
$total_record = $con->query($sql)->result();
$page = ( isset($_GET['page']) && is_numeric($_GET['page'])) ? $_GET['page'] : 1;
$per_page = 20;
$offset = ($page - 1) * $per_page;
$pages = ceil($total/$per_page);
$sql = sprintf("SELECT * FROM your_table WHERE year='%s' LIMIT %s, %s", $_GET['year'], $offset, $per_page);
// QUERY TO DATABASE
for($i=1; $i<=$pages; $i++){
if ($page == $i) {
echo '<span class="active">'. $i .'</span>';
}else{
echo '' .$i .'';
}
}
This is mysql connection coding, it is working fine
the same code i wrote with pdo connection,it is not working i'm new to php please help me to get out of this problem.
thanks in advance
<?php
error_reporting(0);
ini_set('max_execution_time', 600);
require_once 'config.php';
if(isset($_GET["nm_mask"]))
$nm_mask = $_GET['nm_mask'];
else
$nm_mask = "";
if(isset($_GET["cd_mask"]))
$cd_mask = $_GET['cd_mask'];
else
$cd_mask = "";
if(isset($_GET["func"]))
$func = $_GET['func'];
else
$func = "";
$where = "WHERE 1=1";
if($nm_mask!='')
$where.= " AND Login LIKE '$nm_mask%'";
if($cd_mask!='')
$where.= " AND Manager_Login LIKE '$cd_mask%'";
if($func!='')
$where.= " AND Function LIKE '$func%'";
$page = $_GET['page']; // get the requested page
$limit = $_GET['rows']; // get how many rows we want to have into the grid
$sidx = $_GET['sidx']; // get index row - i.e. user click to sort
$sord = $_GET['sord']; // get the direction
if(!$sidx) $sidx =1; // connect to the database
$result = mysqli_query("SELECT COUNT(*) AS count FROM EmpMasterTB ".$where);
$row = mysqli_fetch_array($result,MYSQLI_ASSOC);
$count = $row['count'];
if( $count >0 ) {
$total_pages = ceil($count/$limit);
} else {
$total_pages = 0;
}
if ($page > $total_pages) $page=$total_pages;
if ($limit<0) $limit = 0;
$start = $limit*$page - $limit; // do not put $limit*($page - 1)
if ($start<0) $start = 0;
$SQL = "SELECT * from EmpMasterTB ". $where ." ORDER BY $sidx $sord LIMIT $start , $limit";
$result = mysqli_query( $SQL ) or die("Couldn?t execute query.".mysqli_error());
$responce->page = $page;
$responce->total = $total_pages;
$responce->records = $count;
$i=0;
while($row = mysqli_fetch_array($result,MYSQLI_ASSOC)) {
$responce->rows[$i]['id']=$row[WeekNo].$row[Login];
$responce->rows[$i]['cell']=array($row['WeekNo'],$row['WeekBeginning'],$row['SITE'],$row['Name'],$row['WFH'],$row['Login'],$row['Manager_Login'],$row['Lead'],$row['Cost_center'],$row['Business_Title'],$row['Function'],$row['Workgroup'],$row['Login_time'],$row['ROLE'],$row['Secondary_Skill'],$row['Weekoff'],""); $i++;
}
echo json_encode($responce);
?>
PDO connection code
<?php
error_reporting(0);
ini_set('max_execution_time', 600);
require_once 'config.php';
if(isset($_GET["nm_mask"]))
$nm_mask = $_GET['nm_mask'];
else
$nm_mask = "";
if(isset($_GET["cd_mask"]))
$cd_mask = $_GET['cd_mask'];
else
$cd_mask = "";
if(isset($_GET["func"]))
$func = $_GET['func'];
else
$func = "";
$where = "WHERE 1=1";
if($nm_mask!='')
$where.= " AND Login LIKE '$nm_mask%'";
if($cd_mask!='')
$where.= " AND Manager_Login LIKE '$cd_mask%'";
if($func!='')
$where.= " AND Function LIKE '$func%'";
$page = $_GET['page']; // get the requested page
$limit = $_GET['rows']; // get how many rows we want to have into the grid
$sidx = $_GET['sidx']; // get index row - i.e. user click to sort
$sord = $_GET['sord']; // get the direction
if(!$sidx) $sidx =1; // connect to the database
$count = $dbh->exec("SELECT COUNT(*) AS count FROM EmpMasterTB ".$where);
if( $count >0 ) {
$total_pages = ceil($count/$limit);
} else {
$total_pages = 0;
}
if ($page > $total_pages) $page=$total_pages;
if ($limit<0) $limit = 0;
$start = $limit*$page - $limit; // do not put $limit*($page - 1)
if ($start<0) $start = 0;
$SQL = "SELECT * from EmpMasterTB ". $where ." ORDER BY $sidx $sord LIMIT $start , $limit"; /*** The SQL SELECT statement ***/
$stmt = $dbh->query($SQL); /*** fetch into an PDOStatement object ***/
$responce->page = $page;
$responce->total = $total_pages;
$responce->records = $count;
$i=0;
/*** echo number of columns ***/
$obj = $stmt->fetch(PDO::FETCH_OBJ);
/*** loop over the object directly ***/
{
$responce->rows[$i]['id']=$obj->WeekNo.$obj->Login;
$responce->rows[$i]['cell']=array($obj->WeekNo ,$obj->WeekBeginning ,$obj->SITE ,$obj->Name ,$obj->WFH ,$obj->Login ,$obj->Manager_Login ,$obj->Lead ,$obj->Cost_center ,$obj->Business_Title ,$obj->Function ,$obj->Workgroup ,$obj->Login_time ,$obj->ROLE ,$obj->Secondary_Skill ,$obj->Weekoff ); $i++;
}
echo json_encode($ );
?>
You have missed for loop and you didn't pass response in json_encode().
Please check my below code:
/*** echo number of columns ***/
$objs = $stmt->fetch(PDO::FETCH_OBJ);
/*** loop over the object directly ***/
foreach($objs as $obj)
{
$responce->rows[$i]['id']=$obj->WeekNo.$obj->Login;
$responce->rows[$i]['cell']=array($obj->WeekNo ,$obj->WeekBeginning ,$obj->SITE ,$obj->Name ,$obj->WFH ,$obj->Login ,$obj->Manager_Login ,$obj->Lead ,$obj->Cost_center ,$obj->Business_Title ,$obj->Function ,$obj->Workgroup ,$obj->Login_time ,$obj->ROLE ,$obj->Secondary_Skill ,$obj->Weekoff ); $i++;
}
echo json_encode($responce );
So I was trying to do pagination with php, but I can't quite get it done, there is an error of undefined index page in it somewhere, I have no idea why...here is my code:
<?php
$perpage = 10;
if (empty($_GET['page'])) {
$page = 1;
}else{
$page = $_GET['page'];
}
$limitstart = $_GET['page'] - 1 * $perpage;
$query = "SELECT * FROM images ORDER BY id DESC LIMIT '".$limitstart."', '".$perpage."' ";
$result = mysqli_query($con,$query) or die(mysqli_error($con));
while($row=mysqli_fetch_array($result)) {
?>
I appreciate your help in any way, thank you.
$limitstart = $_GET['page'] - 1 * $perpage;
is the same as (remember your math class)
$limitstart = $_GET['page'] - (1 * $perpage);
You would like to use
$limitstart = ($page - 1) * $perpage;
(also note the usage of your $page-variable)
I've just started using PDO instead of the mysql functions. But now I'm stuck on a part of my php blog.
How would I make this code a little more PDO friendly:
$total_results = mysql_fetch_array(mysql_query("SELECT COUNT(*) as num
FROM php_blog"));
$total_pages = ceil($total_results['num'] / $blog_postnumber);
for($i = 1; $i <= $total_pages; $i++) {
if ($page == $i) {
echo "<span class='current'>$i</span>";
}
else {
echo "$i";
}
}
I tried with PDO rowCount(), but it doesn't seem to work...
Sorry for my poor english, I'm from Sweden!
rowCount doesn't work with mySQL in PDO. Instead, you just run the count(*) query.
<?php
$sql = "SELECT count(*) FROM `table` WHERE foo = bar";
$result = $con->prepare($sql);
$result->execute();
$number_of_rows = $result->fetchColumn();
Source: Row count with PDO
$stmt = $db->exec( "select count(*) as num from php_blog" );
$results = $stmt->fetch();
$total_results = $results[ 'num' ];
$total_pages = ceil( $total_results / $blog_postnumber );
for($i = 1; $i <= $total_pages; $i++) {
if ($page == $i) {
echo "<span class='current'>$i</span>";
}
else {
echo "$i";
}
}