add_meta

Source code

function add_meta( $post_ID ) {

	global $wpdb;

	$post_ID = (int) $post_ID;



	$metakeyselect = isset($_POST['metakeyselect']) ? stripslashes( trim( $_POST['metakeyselect'] ) ) : '';

	$metakeyinput = isset($_POST['metakeyinput']) ? stripslashes( trim( $_POST['metakeyinput'] ) ) : '';

	$metavalue = isset($_POST['metavalue']) ? maybe_serialize( stripslashes_deep( $_POST['metavalue'] ) ) : '';

	if ( is_string($metavalue) )

		$metavalue = trim( $metavalue );



	if ( ('0' === $metavalue || !empty ( $metavalue ) ) && ((('#NONE#' != $metakeyselect) && !empty ( $metakeyselect) ) || !empty ( $metakeyinput) ) ) {

		// We have a key/value pair. If both the select and the

		// input for the key have data, the input takes precedence:



 		if ('#NONE#' != $metakeyselect)

			$metakey = $metakeyselect;



		if ( $metakeyinput)

			$metakey = $metakeyinput; // default



		if ( is_protected_meta( $metakey ) )

			return false;



		wp_cache_delete($post_ID, 'post_meta');

		$wpdb->insert( $wpdb->postmeta, array( 'post_id' => $post_ID, 'meta_key' => $metakey, 'meta_value' => $metavalue ) );

		$meta_id = $wpdb->insert_id;

		do_action( 'added_postmeta', $meta_id, $post_ID, $metakey, $metavalue );



		return $meta_id;

	}

	return false;

} // add_meta