post_custom() WordPress Function

The post_custom() function is a versatile way to get custom fields for a post in WordPress. It can be used to get data for a specific post, or to get an array of all custom fields for a post. You can also specify which custom field you want to get, or you can get all custom fields for a post as an associative array.

post_custom( string $key = '' ) #

function post_custom( $key = '' ) {
	$custom = get_post_custom();

	if ( ! isset( $custom[ $key ] ) ) {
		return false;
	} elseif ( 1 === count( $custom[ $key ] ) ) {
		return $custom[ $key ][0];
	} else {
		return $custom[ $key ];
	}
}