Getting user id from username?

I think you want get_userdatabylogin():

$user = get_userdatabylogin('myusername');
echo $user->ID; // prints the id of the user

Does not seem to work. Nothing prints out.

Bump. Any clue?

Do var_dump($user); to see if any data is being returned from get_userdatabylogin. If myusername is the user name of a user, it will work, unless a plugin has redefined get_userdatabylogin so that it doens’t work (unlikely).

So how? Like this?:

var_dump($user)
$user = get_userdatabylogin('myusername');
echo $user->ID; // prints the id of the user

…which prints out NULL.

$user = get_userdatabylogin('admin');
var_dump($user);
echo $user->ID; // prints the id of the user

Thanks. That worked fine for me.
I owe you one ?? Happy new year 2009.

Thank you thank you. I was looking for ever to find a means of extracting the userid from login name and your snippet worked a treat!