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05.25.2008 at 11:23AM PDT, ID: 23431475
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9.1

Problem In PHP DB-Table-Viewing Script

Asked by macrolific in PHP and Databases, PHP Scripting Language

Tags:

Below is a wonderful PHP script that I've been developing over the last few days with the help of some very bright people here at EE.  It does the following 3 things, but the 2nd function interferes with the 3rd:

1.  Displays my database table (just the first 4 fields so far) in an html table
2.  Enables alphabetical sorting of columns (DB fields) by clicking on column headers
3.  Enables selection of columns to view with checkboxes at the top of the page

One problem remains: If I have fewer than all 4 checkboxes checked and am therefore viewing fewer than all 4 columns, sorting any column -- by clicking any column header -- causes the page to reload with all checkboxes checked and all columns appearing.

For example, when the page first loads, I see 4 checkboxes checked and 4 columns of data.  If I then deselect 2 checkboxes and hit submit, the page reloads with 2 checkboxes checked and 2 columns of data.  Let's say I then click a column header to sort by that column.  After the page reloads, the table is sorted as expected, but now all 4 columns appear and all 4 checkboxes are checked.

So sorting works, but it defeats the ability to limit the number of columns with the checkboxes.

Can anyone figure out how to get the script's sorting function to stop causing all columns to appear?

Thanks!Start Free Trial 
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<?php
//let the server give you feedback upon errors/warnings
error_reporting(E_ALL);
 
$DB_SERVER="";//SPECIFY IP or DOMAIN OF YOUR DB SERVER
$DB_USERNAME="";
$DB_PASSWORD="";
$DB_NAME="";//SPECIFY NAME OF YOUR DATABASE
 
//set the default state for the checkboxes
$checkedFields = array();
$checkedFields['invoice_num'] = " checked='checked' ";
$checkedFields['firstname'] = " checked='checked' ";
$checkedFields['lastname'] = " checked='checked' ";
$checkedFields['middle'] = " checked='checked' ";
 
if( isset($_REQUEST['fieldTracker']) )
{
	//determine the "unchecked" ones 
	if( empty($_REQUEST['invoice_num']) )
		$checkedFields['invoice_num']="";
	if( empty($_REQUEST['firstname']) )
		$checkedFields['firstname']="";
	if( empty($_REQUEST['lastname']) )
		$checkedFields['lastname']="";
	if( empty($_REQUEST['middle']) )
		$checkedFields['middle']="";
}
 
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
 "http://www.w3.org/TR/REC-html40/loose.dtd">
<html>
<head>
<title></title>
</head>
<body>
<div>
  <form action="<?=$_SERVER['PHP_SELF']?>" method="post" name="select" id="select">
    <input type="checkbox" name="invoice_num" value="1" <?=$checkedFields['invoice_num']?> />Invoice
    <input type="checkbox" name="firstname" value="1" <?=$checkedFields['firstname']?> />First Name
    <input type="checkbox" name="lastname" value="1" <?=$checkedFields['lastname']?> />Last Name
    <input type="checkbox" name="middle" value="1" <?=$checkedFields['middle']?> />Middle
    <input name="fieldTracker" type="submit" value="submit" />
  </form>
</div>
<?php
 
if ( !($link = mysql_connect($DB_SERVER, $DB_USERNAME, $DB_PASSWORD)) ) {
    echo 'Could not connect to mysql: ' . mysql_error();
    exit;
}
if (!mysql_select_db($DB_NAME, $link)) {
    echo 'Could not select database: ' . mysql_error();
    exit;
}
$sql    = 'SELECT * FROM tbl_authnet_data';
if (isset($_REQUEST['Orderby']))
{
      $sql    = $sql . " Order By ". $_REQUEST['Orderby'];
}
$result = mysql_query($sql, $link) or die("Query Error: " . mysql_error());
 
if (!$result) {
    echo "DB Error, could not query the database\n";
    echo 'MySQL Error: ' . mysql_error();
    exit;
}
$colspan=0;
print "<table align='center' border='0' cellpadding='2' bgcolor='#CCCCCC'>";
print "<tr style='color: white;'>";
if( !empty($checkedFields['invoice_num']) )
{
	++$colspan;
	print "<th><a href='{$_SERVER[PHP_SELF]}?Orderby=invoice_num'>Invoice</a></th>"; 
}
if( !empty($checkedFields['firstname']) )
{
	++$colspan;
	print "<th><a href='{$_SERVER[PHP_SELF]}?Orderby=firstname'>1st Name</a></th>"; 
}
if( !empty($checkedFields['lastname']) )
{
	++$colspan;
	print "<th><a href='{$_SERVER[PHP_SELF]}?Orderby=lastname'>Last Name</a></th>"; 
}
if( !empty($checkedFields['middle']) )
{
	++$colspan;
	print "<th><a href='{$_SERVER[PHP_SELF]}?Orderby=middle'>Middle Initial</a></th>";
}
 
print "</tr>";
print "<tr><td colspan='{$colspan}'></td></tr>";
 
// Define colors for alternating rows
$color1 = "#fffaf0";
$color2 = "#ffffff";
$row_count = 0;
 
while ($row = mysql_fetch_assoc($result))
{
	$row_color = ($row_count % 2) ? $color1 : $color2;
		print "<tr>";
		foreach ($row as $field => $value)
		{
		if( isset($checkedFields[$field]) && !empty($checkedFields[$field]) )
           	print "<td nowrap='nowrap' align='center' bgcolor='{$row_color}'><font size='2'>{$value}</font></td>";
		}
		print "</tr>";
		$row_count++;
}
print "</table>";
 
?>
</body>
</html>
 
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[+][-]05.25.2008 at 11:35AM PDT, ID: 21643351

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[+][-]05.25.2008 at 11:46AM PDT, ID: 21643381

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[+][-]05.26.2008 at 08:33AM PDT, ID: 21646860

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About this solution

Zones: PHP and Databases, PHP Scripting Language
Tags: PHP, MySQL, HTML
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Solution Provided By: HackneyCab
Participating Experts: 1
Solution Grade: A
 
 
[+][-]05.26.2008 at 08:38AM PDT, ID: 21646876

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[+][-]05.26.2008 at 11:07AM PDT, ID: 21647462

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[+][-]05.27.2008 at 12:37PM PDT, ID: 21654915

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[+][-]05.27.2008 at 02:51PM PDT, ID: 21656057

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