WP_User::has_cap │ public │ WP 2.0.0

Returns whether the user has the specified capability.

This function also accepts an ID of an object to check against if the capability is a meta capability. Meta capabilities such as edit_post edit_user are capabilities used by the map_meta_cap() to map to primitive capabilities that a user or role has, such as edit_posts and edit_others_posts.

Example usage:

$user->has_cap( 'edit_posts' );
$user->has_cap( 'edit_post', $post->ID );
$user->has_cap( 'edit_post_meta', $post->ID, $meta_key );

While checking against a role in place of a capability is supported in part, this practice is discouraged as it may produce unreliable results.

Method of the class: WP_User{}

Returns

bool. Whether the user has the given capability, or, if an object ID is passed, whether the user has the given capability for that object.

Usage

$WP_User = new WP_User();
$WP_User->has_cap( $cap, ...$args );

$cap(string) (required)

Capability name.

...$args(mixed) (required)

Optional further parameters, typically starting with an object ID.

Notes

Changelog

WP_User::has_cap() WP User::has cap code ^{WP 7.1}

public function has_cap( $cap, ...$args ) {
	if ( is_numeric( $cap ) ) {
		_deprecated_argument( __FUNCTION__, '2.0.0', __( 'Usage of user levels is deprecated. Use capabilities instead.' ) );
		$cap = $this->translate_level_to_cap( $cap );
	}

	$caps = map_meta_cap( $cap, $this->ID, ...$args );

	// Multisite super admin has all caps by definition, Unless specifically denied.
	if ( is_multisite() && is_super_admin( $this->ID ) ) {
		if ( in_array( 'do_not_allow', $caps, true ) ) {
			return false;
		}
		return true;
	}

	// Maintain BC for the argument passed to the "user_has_cap" filter.
	$args = array_merge( array( $cap, $this->ID ), $args );

	/**
	 * Dynamically filter a user's capabilities.
	 *
	 * @since 2.0.0
	 * @since 3.7.0 Added the `$user` parameter.
	 *
	 * @param bool[]   $allcaps Array of key/value pairs where keys represent a capability name
	 *                          and boolean values represent whether the user has that capability.
	 * @param string[] $caps    Required primitive capabilities for the requested capability.
	 * @param array    $args {
	 *     Arguments that accompany the requested capability check.
	 *
	 *     @type string    $0 Requested capability.
	 *     @type int       $1 Concerned user ID.
	 *     @type mixed  ...$2 Optional second and further parameters, typically object ID.
	 * }
	 * @param WP_User  $user    The user object.
	 */
	$capabilities = apply_filters( 'user_has_cap', $this->allcaps, $caps, $args, $this );

	// Everyone is allowed to exist.
	$capabilities['exist'] = true;

	// Nobody is allowed to do things they are not allowed to do.
	unset( $capabilities['do_not_allow'] );

	// Must have ALL requested caps.
	return array_all( (array) $caps, fn( $cap, $key ) => ! empty( $capabilities[ $cap ] ) );
}