get_category() │ WP 1.5.1

Retrieves category data given a category ID or category object.

If you pass the $category parameter an object, which is assumed to be the category row object retrieved the database. It will cache the category data.

If you pass $category an integer of the category ID, then that category will be retrieved from the database, if it isn't already cached, and pass it back.

If you look at get_term(), then both types will be passed through several filters and finally sanitized based on the $filter parameter value.

Uses: get_term()
1 time — 0.000443 sec (fast) | 50000 times — 0.92 sec (very fast) | PHP 7.0.5, WP 4.5.1

No Hooks.

Return

Object|Array|WP_Error|null. Category data in type defined by $output parameter. WP_Error if $category is empty, null if it does not exist.

Usage

get_category( $category, $output, $filter );
$category(int|object) (required)
Category ID or category row object.
$output(string)
The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which correspond to a WP_Term object, an associative array, or a numeric array, respectively.
Default: OBJECT
$filter(string)
How to sanitize category fields.
Default: 'raw'

Changelog

Since 1.5.1 Introduced.

Code of get_category() WP 5.9.3

wp-includes/category.php 
function get_category( $category, $output = OBJECT, $filter = 'raw' ) {
	$category = get_term( $category, 'category', $output, $filter );

	if ( is_wp_error( $category ) ) {
		return $category;
	}

	_make_cat_compat( $category );

	return $category;
}

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