How To Get WordPress Category ID From Category Name

Every person who already worked on developing a WordPress-based website have faced this question: How to get a category ID? There are plenty of reason you could need to get a Category ID, for example customizing your pages for a given category.

To easily retrieve a Category ID from a Category name, simply paste the following code in the functions.php file of your WordPress theme:

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function get_category_id($cat_name){
	$term = get_term_by('name', $cat_name, 'category');
	return $term->term_id;
}

From this point, all you need to do is call this new function when you want to get a Category ID from a Category name (don’t forget to edit the category name):

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$cat_ID = get_category_id('Category Name');