Programming Forums > Web Development and Design > PHP

k4pil · Feb 11th, 2006, 9:01 AM

I can't get my head round why this isnt working????

<?php
header("Cache-control: private"); //IE 6 Fix 
error_reporting(E_ALL);


include 'connect.php';

$query = "SELECT * FROM product"; 
$result = mysql_query($query); 
$num = mysql_numrows($result);
mysql_close(); 




$text = array("$num");
?>

<form action="cbox.php" method="get" name="myForm"> 
    <input name="ButtonWidget"     type="submit" value="Submit"><br/> 

<?
$i=0;
while ($i < $num)
	{
	$productID=mysql_result($result,$i,"productID");
	$prodName=mysql_result($result,$i,"prodName");
	$text[$i] = "$productID";
	echo $text[$i]; 

?>	


    Checkbox <?php echo $prodName;?>&nbsp;<input name="CheckBox<?php echo $productID;?>" type="checkbox" value="<?php echo $productID;?>"><br/> 

</form> 
</body> 
</html> 
	
	<?
	$i++;
	}
	
	
	echo "Boxes checked: "; 
for ($i = 0; $i < $num; $i++) 
{ 
    if (!empty ($_GET ["CheckBox$productID"])) 
    {
	    echo $productID; 
    }//if
} 
	
	
echo "<br/>"; 


?>

DaWei · Feb 11th, 2006, 10:35 AM

Look, you're getting a lot of help here. The least you could do is say WHAT isn't working or WHAT your code is doing or not doing that isn't up to your expectations. If you don't know as much about what the contents of your variables look like as you'd like to know, USE ECHO OR PRINT_R. Gather some information. Present it to those you're asking for help. Information is key to debugging. Put some effort on YOUR side, here. Of course, you're frustrated. Get over it and try to help your helpers.

k4pil · Feb 11th, 2006, 10:47 AM

Sorz, your right.

Ok, so my array is working correctly as

(Toggle Plain Text)

echo $text[$i];

returns a list of productID's from my database.

Its my for loop and something to do with the GET method.

When i check the boxes and hit submit nothing happens.

My code is

(Toggle Plain Text)

<?php
header("Cache-control: private"); //IE 6 Fix 
error_reporting(E_ALL);


include 'connect.php';

$query = "SELECT * FROM product"; 
$result = mysql_query($query); 
$num = mysql_numrows($result);
mysql_close(); 


$text = array("$num");
?>

<form action="cbox.php" method="get" name="myForm"> 
    <input name="ButtonWidget"     type="submit" value="Submit"><br/> 

<?
$i=0;
while ($i < $num)
	{
	$productID=mysql_result($result,$i,"productID");
	$prodName=mysql_result($result,$i,"prodName");
	$text[$i] = "$productID";
	echo $text[$i]; 

?>	


    Checkbox <?php echo $prodName;?>&nbsp;<input name="CheckBox<?php echo $productID;?>" type="checkbox" value="<?php echo $productID;?>"><br/> 

</form> 
</body> 
</html> 
	
	<?
	$i++;
	}
	
	
	echo "Boxes checked: "; 
for ($i = 0; $i < $num; $i++) 
{ 
    if (!empty ($_GET ["CheckBox$productID"])) 
    {
	    echo $productID; 
    }//if
} 
	
	
echo "<br/>"; 


?>

The page im working on is www.lingan.co.uk/cbox.php

DaWei · Feb 11th, 2006, 10:58 AM

View your source and look at the HTML. Probably your jaw will drop. I'd also suggest you process the 'get' array at the top of the code, before you dink with the page and checkbox contents again, but I don't really know what you want to do with the information.

DaWei · Feb 11th, 2006, 1:54 PM

I don't know exactly what you are trying to accomplish, and of course I don't have your database. I have taken the liberty of making a small database containing product id and product name. It contains three items. When the page is first accessed, it is in "Catalog" mode and presents all three items with a checkbox for each. When you select items and click on "Select" the request is tendered again with the selected items being sent to the server via the "Get" method. The server responds and resends the page in "Cart" mode, showing only those items which were selected. It removes the "Select button and adds a second form with a "Catalog" button that submits via the "Post" method. This means that on submissions of the "Post" type, the "Get" array will be empty, and the page will perform as from the beginning. You may see this here. The code is:
[php]
<?php
require_once ("functions.php");
$secondRequest = count ($_GET);
// Open the database
demoConnect ();
$queryProducts = "SELECT ProductID, ProductName
FROM Demonstration
ORDER BY ProductID";
$catalog = mysql_query ($queryProducts) or die (mysql_error()."product query");
if ($secondRequest) $pageType = 'Cart';
else $pageType = 'Catalog';

$title = '<p style="text-align: center; font-weight: bold; font-size: larger; padding: 5px;">';
$title .= $pageType;
$title .= '</p>';
?>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">

<style type="text/css">
td
{
border: 1px solid #000000;
padding: 10px;
}
.products
{
border: 1px solid #000000;
}
.head
{
font-weight: bold;
text-align: center;
}
.num
{
text-align: right;
}
.name
{
text-align: left;
}
.box
{
text-align: center;
}

</style>

<title>Checkbox Check</title>
</head>

<body>
<?php echo $title;?>
<form action="cbox.php" method="get" name="productSelect">
<table class="products" align="center" width="40%">
<tr>
<td class="head">Product ID</td>
<td class="head">Product Name</td>
<td class="head">Select</td>
</tr>
<?php
$count = 0;
$catalog = mysql_query ($queryProducts) or die (mysql_error()."product query");
while ($rowData = mysql_fetch_array ($catalog))
{
$box = 'CB'.$count;
if (!empty ($_GET [$box])) $checked = 'checked'; else $checked = '';
if (!$secondRequest || $checked)
{
echo '<tr>';
echo '<td class="num">'.$rowData ['ProductID'].'</td>';
echo '<td class="name">'.$rowData ['ProductName'].'</td>';
echo '<td class="box"><input name="CB'.$count.'" type="checkbox" ';
echo $checked.'></td>';
echo '</tr>';
}
$count++;
}
?>
</table>

<?php

if (!$secondRequest) echo <<< qqqq
<div align="center" style="padding: 20px;">
<input name="pSelect" type="submit" value="Select">
</div>
</form>
qqqq;

else echo <<< qqqq
</form>
<form action="cbox.php" method="post" name="showCatalog">
<div align="center" style="padding: 20px;">
<input name="pReturn" type="submit" value="Catalog">
</div>
</form>
qqqq;

?>
</body>
</html>
[/php]
Perhaps this will give some ideas on the various ways to accomplish these kinds of interactions.

k4pil · Feb 12th, 2006, 5:18 PM

Thanks Dawei.

Thats helped a lot!

Feb 11th, 2006, 9:01 AM	#21
k4pil Programmer Join Date: Aug 2005 Location: Leeds - UK Posts: 69 Rep Power: 4	I can't get my head round why this isnt working???? (Toggle Plain Text) <?php header("Cache-control: private"); //IE 6 Fix error_reporting(E_ALL); include 'connect.php'; $query = "SELECT * FROM product"; $result = mysql_query($query); $num = mysql_numrows($result); mysql_close(); $text = array("$num"); ?> <form action="cbox.php" method="get" name="myForm"> <input name="ButtonWidget" type="submit" value="Submit"><br/> <? $i=0; while ($i < $num) { $productID=mysql_result($result,$i,"productID"); $prodName=mysql_result($result,$i,"prodName"); $text[$i] = "$productID"; echo $text[$i]; ?> Checkbox <?php echo $prodName;?> <input name="CheckBox<?php echo $productID;?>" type="checkbox" value="<?php echo $productID;?>"><br/> </form> </body> </html> <? $i++; } echo "Boxes checked: "; for ($i = 0; $i < $num; $i++) { if (!empty ($_GET ["CheckBox$productID"])) { echo $productID; }//if } echo "<br/>"; ?> <?php header("Cache-control: private"); //IE 6 Fix error_reporting(E_ALL); include 'connect.php'; $query = "SELECT * FROM product"; $result = mysql_query($query); $num = mysql_numrows($result); mysql_close(); $text = array("$num"); ?> <form action="cbox.php" method="get" name="myForm"> <input name="ButtonWidget" type="submit" value="Submit"><br/> <? $i=0; while ($i < $num) { $productID=mysql_result($result,$i,"productID"); $prodName=mysql_result($result,$i,"prodName"); $text[$i] = "$productID"; echo $text[$i]; ?> Checkbox <?php echo $prodName;?> <input name="CheckBox<?php echo $productID;?>" type="checkbox" value="<?php echo $productID;?>"><br/> </form> </body> </html> <? $i++; } echo "Boxes checked: "; for ($i = 0; $i < $num; $i++) { if (!empty ($_GET ["CheckBox$productID"])) { echo $productID; }//if } echo "<br/>"; ?>

Feb 11th, 2006, 10:35 AM	#22
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	Look, you're getting a lot of help here. The least you could do is say WHAT isn't working or WHAT your code is doing or not doing that isn't up to your expectations. If you don't know as much about what the contents of your variables look like as you'd like to know, USE ECHO OR PRINT_R. Gather some information. Present it to those you're asking for help. Information is key to debugging. Put some effort on YOUR side, here. Of course, you're frustrated. Get over it and try to help your helpers. __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Feb 11th, 2006, 10:47 AM	#23
k4pil Programmer Join Date: Aug 2005 Location: Leeds - UK Posts: 69 Rep Power: 4	Sorz, your right. Ok, so my array is working correctly as (Toggle Plain Text) echo $text[$i]; echo $text[$i]; returns a list of productID's from my database. Its my for loop and something to do with the GET method. When i check the boxes and hit submit nothing happens. My code is (Toggle Plain Text) <?php header("Cache-control: private"); //IE 6 Fix error_reporting(E_ALL); include 'connect.php'; $query = "SELECT * FROM product"; $result = mysql_query($query); $num = mysql_numrows($result); mysql_close(); $text = array("$num"); ?> <form action="cbox.php" method="get" name="myForm"> <input name="ButtonWidget" type="submit" value="Submit"><br/> <? $i=0; while ($i < $num) { $productID=mysql_result($result,$i,"productID"); $prodName=mysql_result($result,$i,"prodName"); $text[$i] = "$productID"; echo $text[$i]; ?> Checkbox <?php echo $prodName;?> <input name="CheckBox<?php echo $productID;?>" type="checkbox" value="<?php echo $productID;?>"><br/> </form> </body> </html> <? $i++; } echo "Boxes checked: "; for ($i = 0; $i < $num; $i++) { if (!empty ($_GET ["CheckBox$productID"])) { echo $productID; }//if } echo "<br/>"; ?> <?php header("Cache-control: private"); //IE 6 Fix error_reporting(E_ALL); include 'connect.php'; $query = "SELECT * FROM product"; $result = mysql_query($query); $num = mysql_numrows($result); mysql_close(); $text = array("$num"); ?> <form action="cbox.php" method="get" name="myForm"> <input name="ButtonWidget" type="submit" value="Submit"><br/> <? $i=0; while ($i < $num) { $productID=mysql_result($result,$i,"productID"); $prodName=mysql_result($result,$i,"prodName"); $text[$i] = "$productID"; echo $text[$i]; ?> Checkbox <?php echo $prodName;?> <input name="CheckBox<?php echo $productID;?>" type="checkbox" value="<?php echo $productID;?>"><br/> </form> </body> </html> <? $i++; } echo "Boxes checked: "; for ($i = 0; $i < $num; $i++) { if (!empty ($_GET ["CheckBox$productID"])) { echo $productID; }//if } echo "<br/>"; ?> The page im working on is www.lingan.co.uk/cbox.php

Feb 11th, 2006, 10:58 AM	#24
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	View your source and look at the HTML. Probably your jaw will drop. I'd also suggest you process the 'get' array at the top of the code, before you dink with the page and checkbox contents again, but I don't really know what you want to do with the information. __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Feb 11th, 2006, 1:54 PM	#25
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	I don't know exactly what you are trying to accomplish, and of course I don't have your database. I have taken the liberty of making a small database containing product id and product name. It contains three items. When the page is first accessed, it is in "Catalog" mode and presents all three items with a checkbox for each. When you select items and click on "Select" the request is tendered again with the selected items being sent to the server via the "Get" method. The server responds and resends the page in "Cart" mode, showing only those items which were selected. It removes the "Select button and adds a second form with a "Catalog" button that submits via the "Post" method. This means that on submissions of the "Post" type, the "Get" array will be empty, and the page will perform as from the beginning. You may see this here. The code is: [php] <?php require_once ("functions.php"); $secondRequest = count ($_GET); // Open the database demoConnect (); $queryProducts = "SELECT ProductID, ProductName FROM Demonstration ORDER BY ProductID"; $catalog = mysql_query ($queryProducts) or die (mysql_error()."product query"); if ($secondRequest) $pageType = 'Cart'; else $pageType = 'Catalog'; $title = '<p style="text-align: center; font-weight: bold; font-size: larger; padding: 5px;">'; $title .= $pageType; $title .= '</p>'; ?> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <style type="text/css"> td { border: 1px solid #000000; padding: 10px; } .products { border: 1px solid #000000; } .head { font-weight: bold; text-align: center; } .num { text-align: right; } .name { text-align: left; } .box { text-align: center; } </style> <title>Checkbox Check</title> </head> <body> <?php echo $title;?> <form action="cbox.php" method="get" name="productSelect"> <table class="products" align="center" width="40%"> <tr> <td class="head">Product ID</td> <td class="head">Product Name</td> <td class="head">Select</td> </tr> <?php $count = 0; $catalog = mysql_query ($queryProducts) or die (mysql_error()."product query"); while ($rowData = mysql_fetch_array ($catalog)) { $box = 'CB'.$count; if (!empty ($_GET [$box])) $checked = 'checked'; else $checked = ''; if (!$secondRequest \|\| $checked) { echo '<tr>'; echo '<td class="num">'.$rowData ['ProductID'].'</td>'; echo '<td class="name">'.$rowData ['ProductName'].'</td>'; echo '<td class="box"><input name="CB'.$count.'" type="checkbox" '; echo $checked.'></td>'; echo '</tr>'; } $count++; } ?> </table> <?php if (!$secondRequest) echo <<< qqqq <div align="center" style="padding: 20px;"> <input name="pSelect" type="submit" value="Select"> </div> </form> qqqq; else echo <<< qqqq </form> <form action="cbox.php" method="post" name="showCatalog"> <div align="center" style="padding: 20px;"> <input name="pReturn" type="submit" value="Catalog"> </div> </form> qqqq; ?> </body> </html> [/php] Perhaps this will give some ideas on the various ways to accomplish these kinds of interactions. __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Feb 12th, 2006, 5:18 PM	#26
k4pil Programmer Join Date: Aug 2005 Location: Leeds - UK Posts: 69 Rep Power: 4	Thanks Dawei. Thats helped a lot!

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Programming Forums > Web Development and Design > PHP

How to use a checkbox and pass info using PHP??