add_post_type_support( string $post_type, string|array $feature, mixed $args )

Registers support of certain features for a post type.

Description

All core features are directly associated with a functional area of the edit screen, such as the editor or a meta box. Features include: ‘title’, ‘editor’, ‘comments’, ‘revisions’, ‘trackbacks’, ‘author’, ‘excerpt’, ‘page-attributes’, ‘thumbnail’, ‘custom-fields’, and ‘post-formats’.

Additionally, the ‘revisions’ feature dictates whether the post type will store revisions, and the ‘comments’ feature dictates whether the comments count will show on the edit screen.

A third, optional parameter can also be passed along with a feature to provide additional information about supporting that feature.

Example usage:

add_post_type_support( 'my_post_type', 'comments' );
add_post_type_support( 'my_post_type', array(
    'author', 'excerpt',
) );
add_post_type_support( 'my_post_type', 'my_feature', array(
    'field' => 'value',
) );

Parameters

$post_type: (Required) The post type for which to add the feature.
$feature: (Required) The feature being added, accepts an array of feature strings or a single string.
$args: (Optional) extra arguments to pass along with certain features.

Source

File: wp-includes/post.php

function add_post_type_support( $post_type, $feature ) {
	global $_wp_post_type_features;

	$features = (array) $feature;
	foreach ($features as $feature) {
		if ( func_num_args() == 2 )
			$_wp_post_type_features[$post_type][$feature] = true;
		else
			$_wp_post_type_features[$post_type][$feature] = array_slice( func_get_args(), 2 );
	}
}

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Changelog

Changelog
Version	Description
5.3.0	Formalized the existing and already documented `...$args` parameter by adding it to the function signature.
3.0.0	Introduced.