How to customize functions in smarty template engine, smarty template engine function_PHP tutorial

//Create smarty object
require_once("./libs/Smarty.class.php");
$smarty = new Smarty();
//Customize a function
//Explanation: (1), $arr is an array; (2), tpl calling form {test times="4" size="5" con="hello,world" color="red"}
function test($arr){
$str = "";
for($i=0;$i<$arr['times'];$i++){
$str .= "".$arr['con']. "";
}
return $str;
}
//Register function registerPlugin
$smarty->registerPlugin("function","test","test");//The second parameter is the function name called by the template file, which is variable; the third parameter is the custom function name above; corresponding to a corresponding relationship

$smarty->display("temp.tpl");
?>

Usage of smarty custom functions

{test times="3" con="hello world" size="3" color="green"}