smarty calling php

[Wicky]

hello, i have a class am working on, its a datagrid class.

In this datagrid i would like to able it to show form input fields like text boxes and check boxes during compile time by specifying a callback function to be called during compile time by smarty.

 

In my class, i register the function using eval(function_string) when the user of the class chooses to show such columns.

 

I got two questions -:

1) What is the best way to call a php function (which is in a class) during compile using smarty template (i am looking at ajax right now but not sure if there is an easier way).

2) Would the function exists if i use eval(function_string) to register it and then call it from another page without using eva(). For ex, i register a function like so

 

eval("function _selector(){return "<input type blah blah>; }");

and then i use this function in another page called test_call_back.php like so.

$value = $dataGrid->_selector();

instead of eval("$value=$datagrid->_selector()");

 

Will it prompt an error saying function does not exists or will it pass ?

 

Thank you for ure help in advance, Bye