This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

_wp_preview_terms_filter( array $terms, int $post_id, string $taxonomy )

Filters terms lookup to set the post format.

Parameters

$terms

(array) (Required)

$post_id

(int) (Required)

$taxonomy

(string) (Required)

Return

(array)

Source

File: wp-includes/revision.php 

function _wp_preview_terms_filter( $terms, $post_id, $taxonomy ) {
	if ( ! $post = get_post() )
		return $terms;

	if ( empty( $_REQUEST['post_format'] ) || $post->ID != $post_id || 'post_format' != $taxonomy || 'revision' == $post->post_type )
		return $terms;

	if ( 'standard' == $_REQUEST['post_format'] )
		$terms = array();
	elseif ( $term = get_term_by( 'slug', 'post-format-' . sanitize_key( $_REQUEST['post_format'] ), 'post_format' ) )
		$terms = array( $term ); // Can only have one post format

	return $terms;
}

Expand Source Code View on GitHub

Related

Uses

Uses
Uses Description
wp-includes/post.php: get_post()

Retrieves post data given a post ID or post object.
wp-includes/formatting.php: sanitize_key()

Sanitizes a string key.
wp-includes/taxonomy.php: get_term_by()

Get all Term data from database by Term field and data.

Changelog

Changelog
Version Description
WP-3.6.0 Introduced.