piklist-required-attribute

<?php

  // required with Piklist
  piklist('field', array(
    'type' => 'text'
    ,'field' => 'text_required'
    ,'label' => 'Enter some required text'
    ,'required' => true
  ));
  
  // required with Piklist and HTML 5
  piklist('field', array(
    'type' => 'text'
    ,'field' => 'text_required_2'
    ,'label' => 'Enter some required text'
    ,'required' => true
    ,'attributes' => array(
      'required' => 'required' // HTML 5 validation
    )
  ));

?>