[SOLVED] Problems with php paging

daveh33 · October 31, 2007

Hi - I have followed a tutorial online for paiging my mysql results but it doesn't seem to display a link to the next page..

the code is

<?php
require("dbconnect.php");
   @ $rpp;        //Records Per Page
    @ $cps;        //Current Page Starting row number
    @ $lps;        //Last Page Starting row number
    @ $a;        //will be used to print the starting row number that is shown in the page
    @ $b;         //will be used to print the ending row number that is shown in the page 
if(empty($_GET["cps"]))
    {
        $cps = "0";
    }
    else
    {
        $cps = $_GET["cps"];
    } 
  $a = $cps+1;
    $rpp = "1";

    $lps = $cps - $rpp; //Calculating the starting row number for previous page 

$q="Select SQL_CALC_FOUND_ROWS * from videos limit $cps, $rpp";
    $rs=mysql_query($q) or die(mysql_error());
    $nr = mysql_num_rows($rs); //Number of rows found with LIMIT in action 

    $q0="Select FOUND_ROWS()";
    $rs0=mysql_query($q0) or die(mysql_error());
    $row0=mysql_fetch_array($rs0);
    $nr0 = $row0["FOUND_ROWS()"]; //Number of rows found without LIMIT in action 
    if (($nr0 < 10) || ($nr < 10))
    {
           $b = $nr0;
    }
    else
    {
        $b = ($cps) + $rpp;
    } 
  
// $result = mysql_query("SELECT * from videos ORDER BY RAND()")  or die(mysql_error());
while($row = mysql_fetch_array($rs)){
$image = $row['imgurl'];
$video = $row['videourl'];
if ($image && $video) {
echo "<p align=\"center\"><img src=\"$image\" / ><br><a href=\"$video\">DOWNLOAD NOW</a><br><br>";
}
}
if ($cps <> 0)
    {
        $prv =  "<a href='?cps=$lps'>Previous</a>";
    }
    else   
    {
        $prv =  "<font color='cccccc'>Previous</font>";
    } 
?>

atlanta · October 31, 2007

http://www.phpfreaks.com/tutorials/43/0.php

daveh33 · October 31, 2007

I followed the tutorial and copied the code - it still isnt working

the code is

<?php
require("dbconnect.php");

    @mysql_connect($localhost, $user, $password) or die("ERROR--CAN'T CONNECT TO SERVER");
    @mysql_select_db($database) or die("ERROR--CAN'T CONNECT TO DB");

    $limit          = 7;               
    $query_count    = "SELECT count(*) FROM videos";    
    $result_count   = mysql_query($query_count);    
    $totalrows      = mysql_num_rows($result_count); 

    if(empty($page)){
        $page = 1;
    }
        

    $limitvalue = $page * $limit - ($limit); 
    $query  = "SELECT * FROM videos LIMIT $limitvalue, $limit";        
    $result = mysql_query($query) or die("Error: " . mysql_error()); 

    if(mysql_num_rows($result) == 0){
        echo("Nothing to Display!");
    }

    $bgcolor = "#E0E0E0"; // light gray

    echo("<table>");
    
    while($row = mysql_fetch_array($result)){
        if ($bgcolor == "#E0E0E0"){
            $bgcolor = "#FFFFFF";
        }else{
            $bgcolor = "#E0E0E0";
        }
$image = $row['imgurl'];
$video = $row['videourl'];
   echo "<p align=\"center\"><img src=\"$image\" / ><br><a href=\"$video\">DOWNLOAD NOW</a><br><br>";
  
  
    }

    echo("</table>");

    if($page != 1){ 
        $pageprev = $page--;
        
        echo("<a href=\"?&page=$pageprev\">PREV".$limit."</a> "); 
    }else{
        echo("PREV".$limit." ");
    }

    $numofpages = $totalrows / $limit; 
    
    for($i = 1; $i <= $numofpages; $i++){
        if($i == $page){
            echo($i." ");
        }else{
            echo("<a href=\"?page=$i\">$i</a> ");
        }
    }


    if(($totalrows % $limit) != 0){
        if($i == $page){
            echo($i." ");
        }else{
            echo("<a href=\"$PHP_SELF?page=$i\">$i</a> ");
        }
    }

    if(($totalrows - ($limit * $page)) > 0){
        $pagenext = $page++;
         
        echo("<a href=\"$PHP_SELF?page=$pagenext\">NEXT".$limit."</a>"); 
    }else{
        echo("NEXT".$limit); 
    }
    
    mysql_free_result($result);
?>

It displays the results ok - but it just links PREV NEXT with no hyperlinks. Someone please help me!

revraz · October 31, 2007

I hope that isnt your real DB login info...

kratsg · October 31, 2007

Change from this:

    if(empty($page)){
        $page = 1;
    }
        

    $limitvalue = $page * $limit - ($limit);

To this:

$page = $_GET['page'];
    if(empty($page)){
        $page = 1;
    }
        

    $limitvalue = $limit * ($page - 1);

daveh33 · October 31, 2007

That change hasn't effected the result

kratsg · October 31, 2007

What is this so-called result looking like?

daveh33 · October 31, 2007

With 150 eligible database entries - it displays 7 loops of the while statement then "PREV7 1 NEXT7" with no hyperlink no next/prev pages

kratsg · October 31, 2007

When you get the results page, copy the source code, paste it in between some [ code ][ /code ] tags so I can see what is being generated (not the source code for the php, but for the html generated).

daveh33 · October 31, 2007

<html>
<head>
<meta http-equiv="Content-Type" content="text/html>
<link rel="stylesheet" type="text/css" href="style.css" />
<h1><p align="center">WELCOME TO WOW TELECOM<p>
</p></h1>
</head>
<p align="center">
<b>THANKS FOR YOUR PURCHASE</b><br><FONT COLOR="#FF0000""><b>Feel free to download as many of the below videos as you like! ENJOY!!</FONT></b><br>
<img src="hardcoreheader.gif" alt="TOP RATED" /><p>

<p align="center"><b>SHE JUST LOVES TO SUCK COCK</b><br><img src="http://www.mobycam.co.uk/Images/img5_702601.gif" /><br>
<a href="http://www.mobycam.co.uk/videos/ten/vid5_702630.3gp"><font size="2">DOWNLOAD LINK</a><font><br>

<br><FONT SIZE="3" COLOR="#0000FF">DOWNLOAD THE REST</FONT>
<table><p align="center"><img src="http://www.mobycam.co.uk/videos/Videos2/IMAGES/img_700101.gif" / ><br><a href="http://www.mobycam.co.uk/videos/Videos2/Videos/vid_700130.3gp">DOWNLOAD NOW</a><br><br><p align="center"><img src="http://www.mobycam.co.uk/videos/Videos2/IMAGES/img_700201.gif" / ><br><a href="http://www.mobycam.co.uk/videos/Videos2/Videos/vid_700230.3gp">DOWNLOAD NOW</a><br><br><p align="center"><img src="http://www.mobycam.co.uk/videos/Videos2/IMAGES/img_700301.gif" / ><br><a href="http://www.mobycam.co.uk/videos/Videos2/Videos/vid_700330.3gp">DOWNLOAD NOW</a><br><br><p align="center"><img src="http://www.mobycam.co.uk/videos/Videos2/IMAGES/img_700401.gif" / ><br><a href="http://www.mobycam.co.uk/videos/Videos2/Videos/vid_700430.3gp">DOWNLOAD NOW</a><br><br><p align="center"><img src="http://www.mobycam.co.uk/videos/Videos2/IMAGES/img_700501.gif" / ><br><a href="http://www.mobycam.co.uk/videos/Videos2/Videos/vid_700530.3gp">DOWNLOAD NOW</a><br><br><p align="center"><img src="http://www.mobycam.co.uk/videos/Videos2/IMAGES/img_700601.gif" / ><br><a href="http://www.mobycam.co.uk/videos/Videos2/Videos/vid_700630.3gp">DOWNLOAD NOW</a><br><br><p align="center"><img src="http://www.mobycam.co.uk/videos/Videos2/IMAGES/img_700701.gif" / ><br><a href="http://www.mobycam.co.uk/videos/Videos2/Videos/vid_700730.3gp">DOWNLOAD NOW</a><br><br></table>PREV7 1 NEXT7</p>
<br>
<p align="center" class="footer">Copyright © Mobile Media Production Ltd 2007 </p>
<p align="center" class="footer"> </p>

</body>
</html>

kratsg · October 31, 2007

Echo out the following variables to see what their values are:

$totalrows;

$limitvalue;

$numofpages;

See if there's an error in any mysql query:

    $result_count   = mysql_query($query_count) or die(mysql_error());

I found this piece of code here, which makes absolutely no sense to me as the piece of code (for loop) right above it does the correct pagination.

    if(($totalrows % $limit) != 0){
        if($i == $page){
            echo($i." ");
        }else{
            echo("<a href=\"$PHP_SELF?page=$i\">$i</a> ");
        }
    }

daveh33 · October 31, 2007

echo "total rows";
echo $totalrows;
echo "<P>limit value:";
echo $limitvalue;
echo "<P>Number pages:";
echo $numofpages;

produces: -

total rows1

limit value:0

Number pages:

Shall I swap those 2 pieces of code you just said? That was just what I copied from the tutorial

kratsg · October 31, 2007

Just the first one with the mysql_query, you've got an error there, as you're only getting one row returned... :-o

daveh33 · October 31, 2007

The number must be calculated incorrectly as each row provides a hyperlink & image url - the html code shows the results of 7 rows

kratsg · November 1, 2007

Ok, to be honest, I hate this pagination code. Everyone keeps linking to this one and it always freaking fails... Here's the one I use :-D

http://www.phpfreaks.com/tutorials/73/1.php

Here's your code implemented into the above:

<?php

// Database Connection
require("dbconnect.php");

    @mysql_connect($localhost, $user, $password) or die("ERROR--CAN'T CONNECT TO SERVER");
    @mysql_select_db($database) or die("ERROR--CAN'T CONNECT TO DB");


// If current page number, use it
// if not, set one!

if(!isset($_GET['page'])){
    $page = 1;
} else {
    $page = $_GET['page'];
}

// Define the number of results per page
$max_results = 7;

// Figure out the limit for the query based
// on the current page number.
$from = (($page * $max_results) - $max_results); 

// Perform MySQL query on only the current page number's results

$sql = mysql_query("SELECT * FROM videos LIMIT $from, $max_results");

//set initial $bgcolor just to be logical and to have it previously defined
$bgcolor = "#E0E0E0"; // light gray

//echo the start of the table
echo "<table>\n";//the \n are to make the html source look a little cleaner (line by line), the next html echoed will be on the next line

while($row = mysql_fetch_array($sql)){
        if ($bgcolor == "#E0E0E0"){$bgcolor = "#FFFFFF";}else{$bgcolor = "#E0E0E0";}
        $image = $row['imgurl'];
        $video = $row['videourl'];
        //note, I used single quotes for the echo statement while escaping the variables " '.$var.' "
        echo '<p align="center"><img src="'.$image.'" / ><br><a href="'.$video.'">DOWNLOAD NOW</a><br><br>\n';
}

//let's clear the memory of the query now so we can perform other queries a little faster
mysql_free_result($sql);

//end the table, duh o_o
echo "</table>\n";

// Figure out the total number of results in DB:
$total_results = mysql_num_rows(mysql_query("SELECT COUNT(*) as Num FROM videos"));

// Figure out the total number of pages. Always round up using ceil() [10.1 -> 11, IE: 10.1 pages, thus an 11th page to display the ".1" extra
$total_pages = ceil($total_results / $max_results);

// Build Page Number Hyperlinks
echo "<center>Select a Page<br />";

// Build Previous Link
if($page > 1){
    $prev = ($page - 1);
    echo "<a href=\"".$_SERVER['PHP_SELF']."?page=$prev\"><<Previous</a> ";
}

for($i = 1; $i <= $total_pages; $i++){
    if(($page) == $i){
        echo "$i ";
        } else {
            echo "<a href=\"".$_SERVER['PHP_SELF']."?page=$i\">$i</a> ";
    }
}

// Build Next Link
if($page < $total_pages){
    $next = ($page + 1);
    echo "<a href=\"".$_SERVER['PHP_SELF']."?page=$next\">Next>></a>";
}
echo "</center>";
?>

I won't explain how each part works, check out the tutorial for the best explanation. It's simple enough for you to modify and the variables are named.. logically o_o

I modified some of your echo statements, added some \n line breaks to make the html source slightly cleaner, etc...

Copy and paste this into a diff file and let me know if that one works.

daveh33 · November 1, 2007

Thats for that code. I tried saving it as a different page and your right it does produce a much clearer html page - but at the bottom it shows: -

Select a Page

1

With no hyperlinks again..

daveh33 · November 1, 2007

Not to worry I have fixed the code I changed: -

// $total_results = mysql_num_rows(mysql_query("SELECT COUNT(*) as Num FROM videos"));

$query = mysql_query("SELECT * from videos");

$total_results = mysql_num_rows($query);

Sign In

[SOLVED] Problems with php paging

Recommended Posts

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Join the conversation

Important Information