Introduction to the html_options method in smarty

The html_options method in smarty generates a select drop-down list in the template, which id can be initialized to be selected. See the following code: the html_options method in the php part of smarty generates a select drop-down list in the template, which id can be initialized to be selected? See the following code:
Php section
$ SQL _sysuser = "select * from tuser where tuser_status = '1' order by tuser_truename ";
$ Rs_sysuser = $ db-> SQL _query ($ SQL _sysuser );
While ($ row_sysuser = $ db-> SQL _fetchrow ($ rs_sysuser )){
$ Usersys [$ row_sysuser ['tuser _ name'] = $ row_sysuser ['tuser _ truename'];
}
Html section
<{Html_options options = $ sysUser}>

It can be seen that the html_options of smarty actually accepts an array, and this array still requires dropping ~
The key value of the array will be the value of option, and the value of the array will be the value of option. if you need to set a value in the initial status to the selected status

Procedure
$ Smarty-> assign ('customer _ id', 1001 );

Template
{Html_options options = $ cust_options selected = $ customer_id}

Html_options also has a usage. The value of option is separated from the display, so that you can easily handle other situations.
The usage is as follows:
Index. php:

Require ('smarty. class. php ');
$ Smarty = new Smarty;
$ Smarty-> assign ('cust _ id', array ));
$ Smarty-> assign ('cust _ names', array ('Joe schmoe', 'Jack Smith ', 'janejohnson', 'carlie Brown '));
$ Smarty-> assign ('customer _ id', 1001 );
$ Smarty-> display ('index. tpl ');

Template index. tpl:
{Html_options values = $ cust_ids selected = $ customer_id output = $ cust_names}