Retrieve user metadata.
Description
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.
See also
Parameters
$user_idintrequired- User ID
$meta_keystringoptional- Metadata key.
Default:
''
Source
function get_usermeta( $user_id, $meta_key = '' ) {
_deprecated_function( __FUNCTION__, '3.0.0', '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;
}
Changelog
| Version | Description |
|---|---|
| 3.0.0 | Use get_user_meta() |
| 2.0.0 | Introduced. |
get_usermeta() will not find usermeta rows whose meta_keys include hyphens. The function in wp-includes/deprecated.php doesn’t solve this problem.