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Title : Record Set Paging with PHP (RSP)
Categories : PHP, MySQL, Navigation, Databases, HTML and PHP Click here to Update Your Picture
Ehsan Haque
Date : Jun 04th 2004
Grade : 3 of 5 (graded 18 times)
Viewed : 55639
File : 3905.zip
Images : No Images for this code example.
Search : More code by Ehsan Haque
Action : Grade This Code Example
Tools : My Examples List

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CODE NAME: EASY RSP - PHP
AUTHOR'S NAME: M E HAQUE (EHSAN)
DEVELOPMENT DATE: JUNE 04, 2004
PURPOSE: RECORD SET PAGING IN PHP
PHP VERSION: 4.3.4
MySQL VERSION: 4.0.16

Copy of the database table is in the paging.zip file. Please
download it and follow the instruction in the ReadMeSQL.rtf
file

<html>
<head>
<title>Record Set Paging with PHP</title>
</head>

<body>
    <?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
    /////////////////////////////////////////////////////////////////////////////////
    //Database connection
    /////////////////////////////////////////////////////////////////////////////////
   
$user="";
   
$password="";
   
$database="ehsan";

    @
mysql_connect("localhost",$user,$password);

    @
mysql_select_db($database) or die( "Unable to select database");
   
/////////////////////////////////////////////////////////////////////////////////

    /////////////////////////////////////////////////////////////////////////////////
    //Following IF Statement is used to make sure when the page is loaded for the
    //first time, Current Page's Starting row number is 0, i.e. 1st row from the
    //table is being printed. It will change as the user will click on next.
    /////////////////////////////////////////////////////////////////////////////////   
   
if(empty($_GET["cps"]))
    {
       
$cps = "0";
    }
    else
    {
       
$cps = $_GET["cps"];
    }
   
/////////////////////////////////////////////////////////////////////////////////

   
$a = $cps+1;

   
$rpp = "10";

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

    /////////////////////////////////////////////////////////////////////////////////
    //Following IF Statement is used to make sure whether a link to Previous page is
    //needed or not. If the user is viewing the first set of data then the link will
    //be disabled, if on the next set then it will carry the $lps in its link and
    //enable the link
   
if ($cps <> 0)
    {
       
$prv "<a href='paging.php?cps=$lps'>Previous</a>";
    }
    else   
    {
       
$prv "<font color='cccccc'>Previous</font>";
    }
   
/////////////////////////////////////////////////////////////////////////////////

    /////////////////////////////////////////////////////////////////////////////////
    //Following SQL Statement uses SQL_CALC_FOUND_ROWS function to calculate total
    //number of rows found by the query excluding the limit function added at the
    //end of the SQL statement. This is followed by second query with FOUND_ROWS()
    //function which actually gives out the number of rows found.
    /////////////////////////////////////////////////////////////////////////////////
   
$q="Select SQL_CALC_FOUND_ROWS * from paging 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

    /////////////////////////////////////////////////////////////////////////////////
    //Following IF Statement is used to determine whether the user has reached the
    //last page of the records. For example, if we have 27 rows to print and we show
    //10 rows per page, then on the third and the last page it will show seven rows
    //and will say at the top that SHOWING RECORDS FROM 21 to 27. If the following
    //validator is not used then it shows SHOWING RECORDS FROM 21 to 30.
    /////////////////////////////////////////////////////////////////////////////////   
   
if (($nr0 < 10) || ($nr < 10))
    {
           
$b = $nr0;
    }
    else
    {
       
$b = ($cps) + $rpp;
    }
   
/////////////////////////////////////////////////////////////////////////////////

   
?>
<br>
<table border="0" cellpadding="4" cellspacing="1" width="20%" align="center">
  <tr><td align=left colspan="2"><b><font face="verdana" size=1 color="#9999CC"><? echo "$nr0 Records Found"; ?></font></b></td></tr>
  <tr><td align='left' colspan="2"><b><font face="verdana" size=1 color="#9999CC"><? echo "Showing Records from $a to $b"; ?></font></b></td></tr>
  <tr><td bgcolor="#000080" align='Center'><b><font face="verdana" color="#FFFFFF">SL#</font></b></td>
  <td bgcolor="#000080" align='Center'><b><font face="verdana" color="#FFFFFF">Value</font></b></td>
</tr>
    <?
   
while ($row=mysql_fetch_array($rs))
    {
       
/////////////////////////////////////////////////////////////////////////////////
        //This is used to show the serial number on the page as well as to count it up
        //so that we can get the next page's starting row number when it exits the while
        //loop after fullfilling the above SQL criteria.
        /////////////////////////////////////////////////////////////////////////////////
       
$cps = $cps +1;

       
$val=$row["name"];
        echo
"<tr><td align='center'><font face=verdana>$cps</font></td><td align='center'><font fave=verdana>$val</font></td></tr>"
    }
   
    echo
"<tr><td align='right' colspan=2>$prv";

   
/////////////////////////////////////////////////////////////////////////////////
    //Following IF Statement is used to determine whether the Next link will be
    //enabled or disabled. If the user has reached the last page of the record, then
    //the Next link will be disabled.
    /////////////////////////////////////////////////////////////////////////////////
   
if ($cps == $nr0)
    {     
        echo
"  |  <font color='CCCCCC'>Next</font>";
    }
    else
    {
        if (
$nr0 > 5)
        {
            echo
"  |  <a href='paging.php?cps=$cps&lps=$lps'>Next</a>";
        }
    }
   
/////////////////////////////////////////////////////////////////////////////////
   
?>
</td>
</tr>
</table>
</body>
</html>



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 Mohammed Haque wrote : 1120
Hi All

Well this is my first code published online. Please add your comments and let me know if I have done anything very poor or did a OK job. I have a lot to learn and your comments will help me determine my scale. Please also grade the example.

Cheers


Ehsan
 
 Peter Warnock wrote : 1121
nice job with commenting -- i would clean out the font tags and replace with css classes since the font tag is being depracated.
 
 Mohammed Haque wrote : 1122
Thanks Warnock for your comments, well I am currently working to replace them with respective images. Thinking to update it more to add more functionalities. Hope to update it soon. 

Cheers


Ehsan
 
 Chathura Kithmal wrote :1868
Great job friend!!!Your example helped me a lot to my higher diploma project
Thanks a lot & keep up!