Function printUserSelector

Prints an select list option for users

it additionally prints a text field for a custom name

Package: admin-functions
Since: ZenphotoCMS 1.5.8
Located at admin-functions.php

Parameters summary
`string`	`$optionname`	Name of the option, sued for the selector and the current selection
`string`	`$optionname_custom`	If defined this will be used for the custom url option, if null (default) the option name will be used with "_custom" appended
`boolean`	`$type = 'users'`	'users', 'groups', 'allusers'
`boolean`	`$is_galleryoption = false`	Set to true if this is a special gallery class option