I created a admin page for adding editing and deleting items for making a e commerce site.

Adding items is fine but can't seem to delete them. It does not show an error but I included a print_r($sql); and prints an error


session_start();//works with session cookies, helps have persistant data i.e.  if user is not logged in there will be no session variable

if(!isset($_SESSION["manager"])){//if it does not set session manager send it to the file location

//error reporting
ini_set('display_erors', '1');

// be sure to check that this manager session value is infact in the database. 

$managerID = preg_replace('#[0-9]#i','',$_SESSION["id"]);//filter everything but numbers and letters  
$password = preg_replace('#[A-Za-z0-9]#i','',$_SESSION["manager"]);//filter everything but numbers and letters
$manager = preg_replace('#[A-Za-z0-9]#i','',$_SESSION["manager"]);//filter everything but numbers and letters

//run mySQL query to be sure that this person is an admin and that their password session var equals the databse information

//connects to databse

include_once '../store/connect.php';
$sql = "SELECT * FROM admin WHERE id='$managerID' AND username='$manager' AND password = '$password'";//selecting data from databse
$result = mysql_query($sql);//selecting data from databse

$existCount = mysql_num_rows($result);// count the row numbers
	if($existCount == 0){//evaluates the count
		while($row = mysql_fetch_array($result)){
			$id = $row["id"];
			echo "your login session data is not on record in the database";
// delets the item questio to Admin and delete product if they choose

if(isset($_GET['deleteid'])){//targets the url variable
	// echo out question to double check if admin wants to delete item
	echo'Do you really want to delete product with ID of'.$_GET['deleteid'].'?
	<a href="inventory_list.php?yesdelete='.$_GET['deleteid'].'">Yes</a>|
	<a href="inventory_list.php">No</a>';

	//remove item from system and delete its picture
	// delete from database
	$id_to_delete = $_GET['yesdelete'];
	$sql = "DELETE FROM products WHERE id='$id_to_delete" or die(mysql_error());
	$result = mysql_query ($sql);
	//unlink the image from server
	//Remove The Pic ----------------
	$pictodelete = ("../inventory_images/$id_to_delete.jpg");//delete picture from folder 
		if(file_exists($pictodelete)){//makes sure file exists
			unlink($pictodelete);// unlinks picture 
		header("location:inventory_list.php");//helps to refresh page after uploaded file

{	//makes sure user has pressed the submit form 
	//mysql escape string function to filter the data before sending to the database
	$product_name = mysql_real_escape_string($_POST['product_name']);
	$price = mysql_real_escape_string($_POST['price']);
	$category = mysql_real_escape_string($_POST['category']);
	$subcategory = mysql_real_escape_string($_POST['subcategory']);
	$details = mysql_real_escape_string($_POST['details']);
	// see if that product name is an identical match to another product in the system
	$sql = "SELECT id FROM products WHERE product_name='$product_name'";
	$result = mysql_query($sql);
	$productMatch = mysql_num_rows($result);//count the output amount 
	if($productMatch > 0) 
		echo 'sorry you tried to place a duplicate "Product Name " into the system, <a href="inventory_list.php">click here </a>';
		//Add this product into the database now
		$sql = "INSERT INTO products (product_name, price, details, category, subcategory, date_added_date)
			   VALUES ('$product_name', '$price', '$details', '$category', '$subcategory', now())" or die (mysql_error());
			   $result = mysql_query ($sql);
				#now means add todays date once inserted image
				$pid = mysql_insert_id();
				//place image in the folder
				$newname = "$pid.jpg";//product id image name
				move_uploaded_file($_FILES['fileField']['tmp_name'], "../inventory_images/$newname");
				//global variable go to given path
				header("location:inventory_list.php");//helps to refresh page after uploaded file

// This block grabs the whole list for viewing 

$sql = "SELECT * FROM products ORDER BY date_added_date ASC";
$result = mysql_query($sql);
$productCount = mysql_num_rows($result);// count output amount
if($productCount > 0 )
{// if greater then 0, should ouput the product list from database
	while($row = mysql_fetch_array($result)){//access all of the rows that come out on each field to gain access
		$id = $row ["id"];
		$product_name = $row["product_name"];
		$date_added = strftime("%b %d, %y", strtotime($row["date_added_date"]));//formats date 
		$product_list .=  "$date_added -$id - $product_name &nbsp; &nbsp;&nbsp; 
		<a href='inventory_edit.php?pid=$id'>edit</a>
		 &bull;<a href='inventory_list.php?deleteid=$id'> delete</a><br />";//sends pid variable to the item value
	$product_list="you have no products listed in your store yet";



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Inventory List</title>
<link href="../style.css" rel="stylesheet" type="text/css" />

<div align="center" id="mainWrapper">
<?php include_once'../template_header.php'?>
    <div id="pageContent"><br  />
    <div align="right" style="margin-right:32px;"><a href="inventory_list.php#inventoryForm"> +add new store item</a></div>
    <div align="left" style="margin-left 24px">
    <h2>Inventory list</h2>
    <?php echo $product_list;?>
    <a name="inventoryForm" id="inventoryForm"></a>
    <h3>&darr;Add new Inventory  Item Form&darr;</h3>
    <form action="inventory_list.php" enctype="multipart/form-data" name="myForm" id="myForm" method="post">
    <table width="90%" border="0" cellspacing="0" cellpadding="6">
    	<td width="20%">Product Name</td>
        <td width="80%">
        	<input name="product_name" type="text"  id="textfield" size="12" /></label></td>
      	<td>Product Price</td>
        	<input name="price" type="text"  id="textfield" size="12" /></label></td>
      	<td align="right">Category</td>
        	<select name="category"  id="category">
            <option value="Clothing">Clothing</option>
            <option value="Electronics"></option>
        	<select name="subcategory"  id="subcategory"> 
            <option value="Hats">Hats</option>
            <option value="Pants">Pants</option>
            <option value="Shirts">Shirts</option>
      	<td>Product Details</td>
        	<input name="details"  id="textarea" cols="64" rows="6" /></textarea></label></td>
      	<td>Product Image </td>
        	<input type="file" name="fileField"  id="filefield" /></label></td>
        	<input type="submit" name="button"  id="button" value="Add This item Now" 
            onclick="javascript:return validateMyForm();" /></td>
    <br />
    <br />
    <br />

<?php include_once'../template_footer.php'?>

<script type="text/javascript" language="javascript"> 

// By Adam Khoury @ www.developphp.com
function validateMyForm ( ) { 

    var isValid = true;
    if ( document.myForm.product_name.value == "" ) { 
	    alert ( "Please type your Name" ); 
	    isValid = false;
    } else if ( document.form1.uName.value.length < 8 ) { 
            alert ( "Your name must be at least 8 characters long" ); 
            isValid = false;
    } else if ( document.form1.uEmail.value == "" ) { 
            alert ( "Please type your Email" ); 
            isValid = false;
    } else if ( document.form1.uCity.value == "" ) { 
            alert ( "Please type your City" ); 
            isValid = false;
    return isValid;




Warning: Cannot modify header information - headers already sent by (output started at F:\root\xampplite\htdocs\Ecomm\storeadmin\inventory_list.php:51) in F:\root\xampplite\htdocs\Ecomm\storeadmin\inventory_list.php on line 61

Hope you guys can show me where and how to fix the error

thanks :)

Your delete query is malformed and nonsense.

$sql = "DELETE FROM products WHERE id='$id_to_delete" or die(mysql_error());
$result = mysql_query ($sql);

should read

$sql = "DELETE FROM products WHERE id='$id_to_delete'";
$result = mysql_query ($sql) or die(mysql_error());

Thanks a lot it deletes the items :)