update_usermeta()WP 2.0.0

Deprecated from version 3.0.0. It is no longer supported and can be removed in future releases. Use update_user_meta() instead.

Update metadata of user.

There is no need to serialize values, they will be serialized if it is needed. The metadata key can only be a string with underscores. All else will be removed.

Will remove the metadata, if the meta value is empty.


true|false. True on successful update, false on failure.


update_usermeta( $user_id, $meta_key, $meta_value );
$user_id(int) (required)
User ID
$meta_key(string) (required)
Metadata key.
$meta_value(mixed) (required)
Metadata value.



Since 2.0.0 Introduced.
Deprecated Since 3.0.0 Use update_user_meta()

Code of update_usermeta() WP 6.0

function update_usermeta( $user_id, $meta_key, $meta_value ) {
	_deprecated_function( __FUNCTION__, '3.0.0', 'update_user_meta()' );
	global $wpdb;
	if ( !is_numeric( $user_id ) )
		return false;
	$meta_key = preg_replace('|[^a-z0-9_]|i', '', $meta_key);

	/** @todo Might need fix because usermeta data is assumed to be already escaped */
	if ( is_string($meta_value) )
		$meta_value = stripslashes($meta_value);
	$meta_value = maybe_serialize($meta_value);

	if (empty($meta_value)) {
		return delete_usermeta($user_id, $meta_key);

	$cur = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->usermeta WHERE user_id = %d AND meta_key = %s", $user_id, $meta_key) );

	if ( $cur )
		do_action( 'update_usermeta', $cur->umeta_id, $user_id, $meta_key, $meta_value );

	if ( !$cur )
		$wpdb->insert($wpdb->usermeta, compact('user_id', 'meta_key', 'meta_value') );
	elseif ( $cur->meta_value != $meta_value )
		$wpdb->update($wpdb->usermeta, compact('meta_value'), compact('user_id', 'meta_key') );
		return false;

	clean_user_cache( $user_id );
	wp_cache_delete( $user_id, 'user_meta' );

	if ( !$cur )
		do_action( 'added_usermeta', $wpdb->insert_id, $user_id, $meta_key, $meta_value );
		do_action( 'updated_usermeta', $cur->umeta_id, $user_id, $meta_key, $meta_value );

	return true;