Error in /magento/app/Mage.php

I’m getting a T_string error on line 11 on this qty update script, am I missing something?

setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID);

set_time_limit(0);
ini_set('memory_limit','1024M');

/***************** UTILITY FUNCTIONS ********************/
function _getConnection($type = ‘core_read’){
return Mage::getSingleton(‘core/resource’)->getConnection($type);
}

function _getTableName($tableName){
return Mage::getSingleton(‘core/resource’)->getTableName($tableName);
}

function _getAttributeId($attribute_code = ‘price’){
$connection = _getConnection(‘core_read’);
$sql = “SELECT attribute_id
FROM ” . _getTableName(‘eav_attribute’) . ”
WHERE
entity_type_id = ?
AND attribute_code = ?”;
$entity_type_id = _getEntityTypeId();
return $connection->fetchOne($sql, array($entity_type_id, $attribute_code));
}

function _getEntityTypeId($entity_type_code = ‘catalog_product’){
$connection = _getConnection(‘core_read’);
$sql = “SELECT entity_type_id FROM ” . _getTableName(‘eav_entity_type’) . ” WHERE entity_type_code = ?”;
return $connection->fetchOne($sql, array($entity_type_code));
}

function _checkIfSkuExists($sku){
$connection = _getConnection(‘core_read’);
$sql = “SELECT COUNT(*) AS count_no FROM ” . _getTableName(‘catalog_product_entity’) . ” WHERE sku = ?”;
$count = $connection->fetchOne($sql, array($sku));
if($count > 0){
return true;
}else{
return false;
}
}

function _getIdFromSku($sku){
$connection = _getConnection(‘core_read’);
$sql = “SELECT entity_id FROM ” . _getTableName(‘catalog_product_entity’) . ” WHERE sku = ?”;
return $connection->fetchOne($sql, array($sku));
}

function _updateStocks($data){
$connection = _getConnection(‘core_write’);
$sku = $data[0];
$newQty = $data[1];
$productId = _getIdFromSku($sku);
$attributeId = _getAttributeId();

$sql = “UPDATE ” . _getTableName(‘cataloginventory_stock_item’) . ” csi,
” . _getTableName(‘cataloginventory_stock_status’) . ” css
SET
csi.qty = ?,
csi.is_in_stock = ?,
css.qty = ?,
css.stock_status = ?
WHERE
csi.product_id = ?
AND csi.product_id = css.product_id”;
$isInStock = $newQty > 0 ? 1 : 0;
$stockStatus = $newQty > 0 ? 1 : 0;
$connection->query($sql, array($newQty, $isInStock, $newQty, $stockStatus, $productId));
}
/***************** UTILITY FUNCTIONS ********************/

$csv = new Varien_File_Csv();
$data = $csv->getData(‘stocks.csv’); //path to csv
array_shift($data);

$message = ”;
$count = 1;
foreach($data as $_data){
if(_checkIfSkuExists($_data[0])){
try{
_updateStocks($_data);
$message .= $count . ‘> Success:: Qty (‘ . $_data[1] . ‘) of Sku (‘ . $_data[0] . ‘) has been updated.
‘;

}catch(Exception $e){
$message .= $count .’> Error:: while Upating Qty (‘ . $_data[1] . ‘) of Sku (‘ . $_data[0] . ‘) => ‘.$e->getMessage().’
‘;
}
}else{
$message .= $count .’> Error:: Product with Sku (‘ . $_data[0] . ‘) does\’t exist.
‘;
}
$count++;
}
echo $message;
?>

You should not modify the Mage.php file directly, but make a module to overwrite the function in question.