Introduction to using html_checkboxes in smarty

The html_checkboxes method in smarty is used to generate multiple checkboxes and initialize which one is selected. usage in the Template: The html_checkboxes method in smarty is used to generate multiple checkboxes and initialize which one is selected.
Usage in the template:
{Html_checkboxes name = "groupid" options = $ cust_checkboxes selected = $ customer_id separator ="
"}}
Note:
If the data retrieved from the database is multiple-choice, what should be done with the checked value?
In the smarty manual, the variables in options = $ cust_checkboxes must be in the form of arrays ("key" => "value; here, the index value of the array is the value of checkbox, and the content corresponding to the index is the text displayed on the page next to the selection box.
Selected = $ customer the variable here is also a character array. if it is an array and the content in the array is the same as the index value in option, the checkbox is selected.