get_post_custom_keys( int $post_id )

Retrieve meta field names for a post.

Description

If there are no meta fields, then nothing (null) will be returned.

Parameters

$post_id

(Optional) Post ID. Default is ID of the global $post.

Return

(array|void) Array of the keys, if retrieved.

Source

File: wp-includes/post.php 

function get_post_custom_keys( $post_id = 0 ) {
	$custom = get_post_custom( $post_id );

	if ( !is_array($custom) )
		return;

	if ( $keys = array_keys($custom) )
		return $keys;
}

Expand Source Code View on GitHub

Related

Uses

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

Retrieve post meta fields, based on post ID.

Used By

Used By
Used By Description
wp-includes/class-wp-embed.php: WP_Embed::delete_oembed_caches()

Delete all oEmbed caches. Unused by core as of 4.0.0.
wp-includes/post-template.php: the_meta()

Display list of post custom fields.

Changelog

Changelog
Version Description
WP-1.2.0 Introduced.