February 12, 2011 
Definition:
function get_usermeta( $user_id, $meta_key = '' ) {}
Retrieve user metadata.
If $user_id is not a number, then the function will fail over with a ‘false’ boolean return value. Other returned values depend on whether there is only one item to be returned, which be that single item type. If there is more than one metadata value, then it will be list of metadata values.
Parameters
- int $user_id: User ID
- string $meta_key: Optional. Metadata key.
Source code
function get_usermeta( $user_id, $meta_key = '' ) {
_deprecated_function( __FUNCTION__, '3.0', 'get_user_meta()' );
global $wpdb;
$user_id = (int) $user_id;
if ( !$user_id )
return false;
if ( !empty($meta_key) ) {
$meta_key = preg_replace('|[^a-z0-9_]|i', '', $meta_key);
$user = wp_cache_get($user_id, 'users');
// Check the cached user object
if ( false !== $user && isset($user->$meta_key) )
$metas = array($user->$meta_key);
else
$metas = $wpdb->get_col( $wpdb->prepare("SELECT meta_value FROM $wpdb->usermeta WHERE user_id = %d AND meta_key = %s", $user_id, $meta_key) );
} else {
$metas = $wpdb->get_col( $wpdb->prepare("SELECT meta_value FROM $wpdb->usermeta WHERE user_id = %d", $user_id) );
}
if ( empty($metas) ) {
if ( empty($meta_key) )
return array();
else
return '';
}
$metas = array_map('maybe_unserialize', $metas);
if ( count($metas) == 1 )
return $metas[0];
else
return $metas;
}
1881
A HitchHackers guide through WordPress 
hi 🙂
i use get_user_meta, but this function return null o false, but in my mysql There are data
help please
Could you post the exact call you’re trying?