您可以使用get_users 函数及其meta\\u键参数，如下所示。

$users = get_users(array(
    \'meta_key\'     => \'blocking_users\',
));

var_dump( $users );

$user_id = get_current_user_id();
$key = \'blocking_users\';
$single = false;
$blocking_users = get_user_meta( $user_id, $key, $single ); 
echo \'<p>The \'. $key . \' value for user id \' . $user_id . \' is: </p>\'; 
print_r($blocking_users);