Is there any way to get uid from user name in Drupal?

Question

Is there any core function to get uid from username in Drupal? Or I should perform a db query? my field is a textfield with '#autocomplete_path' equal to 'user/autocomplete'

Answer 1

You can use the user_load function. See http://api.drupal.org/api/function/user_load/6

In particular see http://api.drupal.org/api/function/user_load/6#comment-6439

So you would do something like this:

// $name is the user name
$account = user_load(array('name' => check_plain($name)));
// uid is now available as $account->uid

Answer 2

Somehow I couldn't make the query work but I found this:

$user = user_load_by_name($username);
$user_id = $user->uid;

see: http://api.drupal.org/api/drupal/modules%21user%21user.module/function/user_load_by_name/7

Answer 3

The user load function is very heavy, would use up more resources and return more data than required, Here is a nice little function for you:

function get_uid($username)
{    
    // Function that returns the uid based on the username given
    $user = db_fetch_object(db_query("SELECT uid FROM users WHERE name=':username'", array(":username" => $username)));

    return $user->uid;
}

Note: This code is revised and input is escaped, so the code is not dangerous in any way.

Answer 4

You can get all the info about logged user with global $user variable.

The code is:

<?php
global $user;
$uid = $user->uid;
echo $uid;
?>

Answer 5

There is no ready made API function for this, not that I know of. But you can make your own if you needs several places. It should be pretty simple and straight forward to query the db for the uid.