I am getting the following error and cannot figure out why:
Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/XXXXX/public_html/XXXXXXXXXX/ /php/storeadmin/inventory_list.php on line 82 Can anyone see a reason why, or what it means?(I have outlined line 82 with the
+++===+++
so you would know what line it is, it is not in my code.)
My code is below. See Attachment for line 82 highlighted in yellow
<?php
// This file is [url]www.developphp.com[/url] curriculum material
// Written by Adam Khoury January 01, 2011
// [url]http://www.youtube.com/view_play_list?p=442E340A42191003[/url]
session_start();
if (!isset($_SESSION["manager"])) {
header("location: admin_login.php");
exit();
}
// Be sure to check that this manager SESSION value is in fact in the database
$managerID = preg_replace('#[^0-9]#i', '', $_SESSION["id"]); // filter everything but numbers and letters
$manager = preg_replace('#[^A-Za-z0-9]#i', '', $_SESSION["manager"]); // filter everything but numbers and letters
$password = preg_replace('#[^A-Za-z0-9]#i', '', $_SESSION["password"]); // 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 database information
// Connect to the MySQL database
include "../storescripts/connect_to_mysql.php";
$sql = mysql_query("SELECT * FROM admin WHERE id='$managerID' AND username='$manager' AND password='$password' LIMIT 1"); // query the person
// ------- MAKE SURE PERSON EXISTS IN DATABASE ---------
$existCount = mysql_num_rows($sql); // count the row nums
if ($existCount == 0) { // evaluate the count
echo "Your login session data is not on record in the database.";
exit();
}
?>
<?php
// Script Error Reporting
error_reporting(E_ALL);
ini_set('display_errors', '1');
?>
<?php
// Delete Item Question to Admin, and Delete Product if they choose
if (isset($_GET['deleteid'])) {
echo 'Do you really want to delete product with ID of ' . $_GET['deleteid'] . '? <a href="inventory_list.php?yesdelete=' . $_GET['deleteid'] . '">Yes</a> | <a href="inventory_list.php">No</a>';
exit();
}
if (isset($_GET['yesdelete'])) {
// remove item from system and delete its picture
// delete from database
$id_to_delete = $_GET['yesdelete'];
$sql = mysql_query("DELETE FROM products WHERE id='$id_to_delete' LIMIT 1") or die (mysql_error());
// unlink the image from server
// Remove The Pic -------------------------------------------
$pictodelete = ("../inventory_images/$id_to_delete.jpg");
if (file_exists($pictodelete)) {
unlink($pictodelete);
}
header("location: inventory_list.php");
exit();
}
?>
<?php
// Parse the form data and add inventory item to the system
if (isset($_POST['product_name'])) {
$product_name = mysql_real_escape_string($_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
$sql = mysql_query("SELECT id FROM products WHERE product_name='$product_name' LIMIT 1");
$productMatch = mysql_num_rows($sql); // 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>';
exit();
}
// Add this product into the database now
$sql = mysql_query("INSERT INTO products (product_name, price, details, category, subcategory, date_added)
VALUES('$product_name','$price','$details','$category','$subcategory',now())") or die (mysql_error());
$pid = mysql_insert_id();
// Place image in the folder
$newname = "$pid.jpg";
move_uploaded_file( $_FILES['fileField']['tmp_name'], "../inventory_images/$newname");
header("location: inventory_list.php");
exit();
}
?>
<?php
// This block grabs the whole list for viewing
$product_list = "";
$sql = mysql_query("SELECT * FROM products ORDER BY date_added DESC");
$productCount = mysql_num_rows($sql); // count the output amount
if ($productCount > 0) {
while($row = mysql_fetch_array($sql)){
$id = $row["id"];
$product_name = $row["product_name"];
$price = $row["price"];
$date_added = strftime("%b %d, %Y", strtotime($row["date_added"]));
$product_list .= "Product ID: $id - <strong>$product_name</strong> - $$price - <em>Added $date_added</em> <a href='inventory_edit.php?pid=$id'>edit</a> • <a href='inventory_list.php?deleteid=$id'>delete</a><br />";
}
} else {
$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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Inventory List</title>
<link rel="stylesheet" href="../style/style.css" type="text/css" media="screen" />
</head>
<body>
<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 Inventory Item</a></div>
<div align="left" style="margin-left:24px;">
<h2>Inventory list</h2>
<?php echo $product_list; ?>
</div>
<hr />
<a name="inventoryForm" id="inventoryForm"></a>
<h3>
↓ Add New Inventory Item Form ↓
</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">
<tr>
<td width="20%" align="right">Product Name</td>
<td width="80%"><label>
<input name="product_name" type="text" id="product_name" size="64" />
</label></td>
</tr>
<tr>
<td align="right">Product Price</td>
<td><label>
$
<input name="price" type="text" id="price" size="12" />
</label></td>
</tr>
<tr>
<td align="right">Category</td>
<td><label>
<select name="category" id="category">
<option value="Clothing">Clothing</option>
</select>
</label></td>
</tr>
<tr>
<td align="right">Subcategory</td>
<td><select name="subcategory" id="subcategory">
<option value=""></option>
<option value="Hats">Hats</option>
<option value="Pants">Pants</option>
<option value="Shirts">Shirts</option>
<option value="trunks">trucks</option>
</select></td>
</tr>
<tr>
<td align="right">Product Details</td>
<td><label>
<textarea name="details" id="details" cols="64" rows="5"></textarea>
</label></td>
</tr>
<tr>
<td align="right">Product Image</td>
<td><label>
<input type="file" name="fileField" id="fileField" />
</label></td>
</tr>
<tr>
<td> </td>
<td><label>
<input type="submit" name="button" id="button" value="Add This Item Now" />
</label></td>
</tr>
</table>
</form>
<br />
<br />
</div>
<?php include_once("../template_footer.php");?>
</div>
</body>
</html>
