//Place this file in your Magento root folder, or modify the require once to match your directory.
 
//increase execution time to 900seconds for larger stores
ini_set('max_execution_time', 900);
 
//require Magento
require_once 'app/Mage.php';
$app = Mage::app('admin');
umask(0);
 
//set error reporting
error_reporting(E_ALL & ~E_NOTICE);
Mage::setIsDeveloperMode(true);
 
//array of indexes - You probably won`t use them all, modify this for your needs
$indexcodes = array("cataloginventory_stock","catalogsearch_fulltext","catalog_category_flat","catalog_category_product",
"catalog_product_attribute","catalog_product_attribute","catalog_product_flat","catalog_product_price",
"catalog_url","groupscatalog2_category","groupscatalog2_product","tag_summary");
 
//reindex
foreach ($indexcodes as $index) {
print 'Reindex  ' . $index;
try {
$process = Mage::getModel('index/indexer')->getProcessByCode($index);
$process->reindexAll();
} catch(Exception $e) {
echo 'Oops, error while reindexing index' . $index . '<br/>';
print($e->getMessage());
}
}