review collection magento

magento aditya: Magento get review collection

Category children magento

magento aditya: Magento get Category children id

get Category children id magento

<?php
$cat = Mage::getModel('catalog/category')->load(2);  /*load category*/
 $subcatcollection = $cat->getChildren();
$subcatrgories = explode(",",$subcatcollection);    /* it gives string , convert in array */
?>

get review collection magento

<?php

 $reviewcollection = Mage::getModel('review/review')->getCollection(); /*collection */
foreach($reviewcollection as $reviwe){
   print_r($reviwe);                   /*review*/
}
 ?>

marge category product collection magento

<?php
$merged_ids = array();
$categoryIdArray  =  array(2,6,5);

foreach(array_unique($categoryIdArray) as $categoryid)
{
$collection = Mage::getModel('catalog/category')->load($categoryid)->getProductCollection();
if($collection->getAllIds())
{
$temp = $collection->getAllIds();
for($k=0;$k<count($temp);$k++){
$merged_ids[] = $temp[$k];
}
unset($temp);
}
}


$merged_collection = Mage::getResourceModel('catalog/product_collection')
    ->addFieldToFilter('entity_id', $merged_ids)
    ->addAttributeToSelect('*');



?>

resize product image magento

$productId = 2;
$width = 200;
$height = 200;
$product = Mage::getModel('catalog/product')->load($productId);
$resizeimage = Mage::helper('catalog/image')->init($product, 'image')->resize($width, $height);

category product collection magento

$categoryId = 3;
$categoryProductCollection = Mage::getModel('catalog/category')->load($categoryId)->getProductCollection();

Collection Filter magento

$modulecollection  = Mage::getModel("module/module")->getCollection()-addFilter($attributecode,$value);

add image to product magento

$product = Mage::getModel('catalog/product')->load($productid);
 $frontImage = $imagepath/$frontImagename;

$product->setMediaGallery (array('images'=>array (), 'values'=>array ()));
$product->addImageToMediaGallery($frontImage, array('image','small_image','thumbnail'),false,false);
$product->save();

upload file magento

$_FILES['image']['name'];
$uploader = new Varien_File_Uploader('image');
$uploader->setAllowedExtensions(array('jpg','png','gif'));
$uploader->setAllowRenameFiles(false);
$uploader->setFilesDispersion(false);
$destFile = $path.$_FILES['image']['name'];
$filename = $uploader->getNewFileName($destFile);
$uploader->save($path, $filename);