In Magento, each category has its own ID (often in number form) to distinguish from the rest. Normally, getting category ID is mostly checked by a developer for a specific purpose, but a store owner can check it by himself. In this post, you will know how to get category ID as a developer and as a store owner.
There are several ways to get a category ID:
Get category id from product
// Magento: Getting categroy from product
$categoryIds = $_product->getCategoryIds();
$firstCategoryId = $categoryIds;
$_category = Mage::getModel('catalog/category')->load($firstCategoryId);
Get category id by category name and category parent name
Get category id by category name:
$category = Mage::getResourceModel('catalog/category_collection')->addFieldToFilter('name', 'clothing');
$categoryid = $cat[entity_id];
In case two or more parent categories have subcategories with the same name, you can get the parent first, then get the appropriate child:
$category = Mage::getResourceModel('catalog/category_collection')
->getFirstItem() // The parent category
->getFirstItem(); // The child category
$categoryId = $category->getId();
FOR STORE OWNER
This is the easiest way to check the category ID from backend:
Access your admin panel > Catalog > Manage Categories then in the left menu click on the category whose ID you want to check, you can see it shows the category ID next to the category name, like this:
Hope that this post would be useful for you.
If you have other ways to get category ID, we are glad to have your comment!