Daily Inventory Update through remote FTP file - magento

Question

It’s been 2 days and I came across many tutorials, videos, extension which explains how to do daily updates on my products but none of them seem to work.
I have a website which has around 3,000 products with attributes and all. My supplier updates the inventory file on daily basis and the updated inventory file is kept on a remote ftp to which I have access to.
What I need is the following:
Daily inventory update which will include, prices, quantity, etc
Remove items which has quantity 0
Add new items as per the updated inventory file
I am sure someone out there has answer to my questions. So please get back to me asap.

Answer 1

Fisrt, by "Remove items which has quantity 0", I think you mean to set products as "out of stock" when the inventory is decreased to 0. This is handled automatically by Magento after you update the inventory.
The built-in import/export function should fulfill your requirements.
Some more tutorials if you don't mind:
Tutorial: Using Magento’s Import/Export Profiles
How to add/edit/remove products using the import/export tool

Answer 2

Here, I will share just inventory update ( but this is not good way ). You should create "tab delimited" file as follows :
SKU QTY
978 34
633 0
Then you can create cron job to run this script.
<?php
error_reporting(E_ALL);
ini_set('display_errors', '1');
set_time_limit(0);
ini_set('memory_limit','1024M');
include('app/Mage.php');
Mage::App('default');
//get magento db connection for query
$db_query = Mage::getSingleton('core/resource')->getConnection('core_read');
//get magento db connection for update, add, delete sql statements
$db_update = Mage::getSingleton('core/resource')->getConnection('core_write');
//mail receipent
$to = 'youremail#yoursite.com';
if ($handle = opendir('./var/export'))
{
while (false !== ($file = readdir($handle)))
{
$sku_success = '';
if ($file != '.' && $file != '..')
{
$filename = './var/export/'.$file;
$handle_file = fopen($filename,'r');
$counter = 1;
while (($data = fgetcsv($handle_file, 1000, '\t'))!== FALSE) //read tab delimited
{
if($counter!=1)
{
$sku= $data[0];
$qty = $data[1];
$exists = $db_query->query("SELECT COUNT(sku) cnt FROM catalog_product_entity WHERE sku = '$sku' LIMIT 1");
$found = (($exists->fetchObject()->cnt) > 0) ? true : false;
if ($found == true) //product found, update
{
$entity_id = getEntityIdBySku($db_query, $sku);
updateStockQty ($db_update, $entity_id, $qty);
echo 'product $sku inventory updated?';
$sku_success.= $sku;
} else {
//sku not found, notify by email
$body = "SKU#:".$sku." of ".$file." with a qty of ".$qty." was not found in the the inventory";
sendMsg("SKU#:".$sku." not found!",$to,$body);
}
}
$counter++;
}
fclose($handle_file);
$body = "<strong>SKU?S IMPORTED</strong>".$sku_success."<br/>";
sendMsg($file." successfully imported!",$to,$body);
}
}
closedir($handle);
}
function getEntityIdBySku($db_connection, $sku) //get entity id by its sku
{
$entity_row = $db_connection->query("SELECT entity_id FROM catalog_product_entity p_e WHERE p_e.sku = '$sku'")->fetchObject();
$entity_id = $entity_row->entity_id;
return $entity_id;
}
function updateStockQty($db_connection, $entity_id, $qty) //updates the stock quantity
{
$db_connection->query("UPDATE cataloginventory_stock_item s_i, cataloginventory_stock_status s_s
SET s_i.qty = '$qty', s_i.is_in_stock = IF('$qty'>0, 1,0),
s_s.qty = '$qty', s_s.stock_status = IF('$qty'>0, 1,0)
WHERE s_i.product_id = '$entity_id' AND s_i.product_id = s_s.product_id ");
}
function sendMsg($subject, $to, $body)//sends email
{
$headers = 'MIME-Version: 1.0' . '\n';
$headers .= 'Content-type: text/html; charset=iso-8859-1'. '\n';
$headers .= 'To: '.$to. '\n';
$headers .= 'From: webmaster#yoursite.com'. '\n';
if (mail($to, $subject, $body,$headers))
{
echo('Message sent!');
} else {
echo('Message failed.');
}
}
?>
The script by courtesy of the Deepcodeonline