title: {if not isset} Smarty
body: <p>what is the code for smarty for <code>if (!isset($var)){</code> ?</p>
  
  <p>if using {if $x eq '5'} when $x is not defined in smarty , it gives an error <code>function call 'get_template_vars' is unknown or deprecated.</code> . this is what i believe so far as i lost hope in trying to know where did this error come from !</p>
  
  <p>Thanky you .</p>