Random display Products Collection magento
<?php
class Mage_Catalog_Block_Product_List_Random extends Mage_Catalog_Block_Product_List
{
protected function _getProductCollection()
{
if (is_null($this->_productCollection)) {
$categoryID = $this->getCategoryId();
if($categoryID)
{
$category = new Mage_Catalog_Model_Category();
$category->load($categoryID); // this is category id
$collection = $category->getProductCollection();
} else
{
$collection = Mage::getResourceModel('catalog/product_collection');
}
Mage::getModel('catalog/layer')->prepareProductCollection($collection);
$collection->getSelect()->order('rand()');
$collection->addStoreFilter();
$numProducts = $this->getNumProducts() ? $this->getNumProducts() : 3;
$collection->setPage(1, $numProducts)->load();
$this->_productCollection = $collection;
}
return $this->_productCollection;
}
}
?>