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dropdown list with paging help

Posted on 2010-09-09
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Last Modified: 2013-12-13
hi
is there a way to have a dropdown say where it loads the first 100 records then some kind of paging feature to read the next 100 etc within the dropdown. i have posted my code and would be grateful if someone could help me get started with this? many thanks
$colname_rsSuggest1 = "-1";
if (isset($_SESSION['kt_idcode_usr'])) {
  $colname_rsSuggest1 = (get_magic_quotes_gpc()) ? $_SESSION['kt_idcode_usr'] : addslashes($_SESSION['kt_idcode_usr']);
}
mysql_select_db($database_conn, $conn);
$query_rsSuggest1 = sprintf("SELECT DISTINCT `boxref` FROM `files` WHERE customer = '%s' AND boxstatus = 1 ORDER BY boxref ASC", $colname_rsSuggest1);
$rsSuggest1 = mysql_query($query_rsSuggest1, $logistor) or die(mysql_error());
$row_rsSuggest1 = mysql_fetch_assoc($rsSuggest1);
$totalRows_rsSuggest1 = mysql_num_rows($rsSuggest1);

<p><fieldset><legend class="style8">Select a Box</legend>
<select name="suggestTextField1" id="suggestTextField1">
<option value="">Select a Box</option>
<?php
do {  
?>
<option value="<?php echo $row_rsSuggest1['boxref']?>"><?php echo $row_rsSuggest1['boxref']?></option>
<?php
} while ($row_rsSuggest1 = mysql_fetch_assoc($rsSuggest1));
  $rows = mysql_num_rows($rsSuggest1);
  if($rows > 0) {
      mysql_data_seek($rsSuggest1, 0);
	  $row_rsSuggest1 = mysql_fetch_assoc($rsSuggest1);
  }
?>
</select>
</fieldset>
 </p>

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Question by:peter_coop
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6 Comments
 
LVL 3

Expert Comment

by:Marbleman
ID: 33636287

If you want to step in pages you could pass the requested page to PHP-Page as a param like ?page=5
Then you walk trough the rowset to the appropriate entry and continute your output from there

$nPage = $_GET["page"];

$nCount = mysql_num_rows($rsSuggest1))
$nMaxPerPage = 25;
$nMaxPage = ceil($nCount / $nMaxPerPage) - 1;
if ($nMaxPage > 0)
{
   $nPage = min(max($nPage, 0), $nMaxPage);
   mysql_data_seek($result, $nPage * $nMaxPerPage);

   //walk through the next $nMaxPerPage rows:
   for($i = 1; $i < $nMaxPerPage; $i++) {

       $row_rsSuggest1 = mysql_fetch_assoc($rsSuggest1);
       //perform output or something else here...


   }
}

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Author Comment

by:peter_coop
ID: 33636742
thanks for reply. 2 questions. where is this parameter from: $nPage = $_GET["page"];
and also, could you mark up your example in my code? thanks
0
 
LVL 3

Accepted Solution

by:
Marbleman earned 250 total points
ID: 33637603
page is a parameter that you send to the php-script:

myCode.php?page=X

myCode.php?page=2 will give you rows 26 to 50
myCode.php?page=3 will give you entries 51 to 100


$colname_rsSuggest1 = "-1";
if (isset($_SESSION['kt_idcode_usr'])) {
  $colname_rsSuggest1 = (get_magic_quotes_gpc()) ? $_SESSION['kt_idcode_usr'] : addslashes($_SESSION['kt_idcode_usr']);
}
mysql_select_db($database_conn, $conn);
$query_rsSuggest1 = sprintf("SELECT DISTINCT `boxref` FROM `files` WHERE customer = '%s' AND boxstatus = 1 ORDER BY boxref ASC", $colname_rsSuggest1);
$rsSuggest1 = mysql_query($query_rsSuggest1, $logistor) or die(mysql_error());
$row_rsSuggest1 = mysql_fetch_assoc($rsSuggest1);
$totalRows_rsSuggest1 = mysql_num_rows($rsSuggest1);

<p><fieldset><legend class="style8">Select a Box</legend>
<select name="suggestTextField1" id="suggestTextField1">
<option value="">Select a Box</option>
<?php
do {  
?>
<option value="<?php echo $row_rsSuggest1['boxref']?>"><?php echo $row_rsSuggest1['boxref']?></option>
<?php
} while ($row_rsSuggest1 = mysql_fetch_assoc($rsSuggest1));
  $rows = mysql_num_rows($rsSuggest1);
  if($rows > 0) {

//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
$nPage = $_GET["page"];

$nCount = mysql_num_rows($rsSuggest1))
$nMaxPerPage = 25;
$nMaxPage = ceil($nCount / $nMaxPerPage) - 1;
if ($nMaxPage > 0)
{
   $nPage = min(max($nPage, 0), $nMaxPage);
   mysql_data_seek($result, $nPage * $nMaxPerPage);

   //walk through the next $nMaxPerPage rows:
   for($i = 1; $i < $nMaxPerPage; $i++) {

       $row_rsSuggest1 = mysql_fetch_assoc($rsSuggest1);
       //perform output or something else here...


   }
}

//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
  }
?>
</select>
</fieldset>
 </p>

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Author Comment

by:peter_coop
ID: 33637710
where is page defined? as in $nPage = $_GET["page"];
thanks
0
 
LVL 3

Expert Comment

by:Marbleman
ID: 33650902
0
 

Author Closing Comment

by:peter_coop
ID: 33670839
thank you for help and link.
0

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