Magento change all attributes value

change_attributes.php

public function getAttributes() {
        $attributes = Mage::getResourceModel('catalog/product_attribute_collection')
                ->getItems();

        return $attributes;
    }


$attributes = $this->getAttributes();
foreach ($attributes as $attribute) {

	if($attribute->getIsSearchable() == 1){
		$attribute->setIsSearchable(false);
		$attribute->save();
	}
	
}