Copy a product's attributes value to another attribute?

Question

I want to copy a product's attribute (weight) to another atribute (general_weight).

I found this:

Create an script at magento root update.php and put the below code :

<?php
require_once  "app/Mage.php";
Mage::app("admin");
umask();

/*
 Step2: get Product Collection filter by Saleable
*/
$collection = Mage::getResourceModel('catalog/product_collection')->addAttributeToSelect('weight');

foreach($collection as $eachproduct){
$val=$product->getWeight();
/*$product->getWeight() is not given the value then used 

$product->getResource()->getAttribute('weight')->getFrontend()->getValue($product-)

*/
$product->setGeneralWeight($val);
$product->getResource()->saveAttribute($product, 'general_weight');

}

then run the script by browser or shell php program.

but this faces to an error:

Fatal error: Call to a member function getWeight() on a non-object in update.php on line 12

Answer 1

Replace

foreach($collection as $eachproduct){

with:

foreach($collection as $product){

Answer 2

Your foreach loop looks like this:

foreach($collection as $eachproduct){

but then you get the weight like this:

$val=$product->getWeight();

the variable names don't match.

Answer 3

There issue with product object name.you should change $eachproduct to $productt as product object variably name is not match that why this create error