How to Keep maintain Radio button and chekbox Values After submit in form

<input type="radio" name="optionsRadios" id="optionsRadios1" value="option1" <?php echo set_radio('optionsRadios','option1',TRUE);?> />

TRUE it's only to tell the default selected one.

Hope it helps..

I am not like to give a by default values ... Whether user select on radio button that only selected... otherwise show error message like plz check one  ...  if employee is selected one radio button .. after submit  how to keep that value in radio buttons... ?  

Manikanta