public static function input_html($field, $echo = true)
 {
     $class = array();
     //$field['type'];
     self::add_input_classes($field, $class);
     $add_html = array();
     self::add_html_size($field, $add_html);
     self::add_html_length($field, $add_html);
     self::add_html_placeholder($field, $add_html, $class);
     $class = apply_filters('frm_field_classes', implode(' ', $class), $field);
     FrmFormsHelper::add_html_attr($class, 'class', $add_html);
     self::add_shortcodes_to_html($field, $add_html);
     $add_html = ' ' . implode(' ', $add_html) . '  ';
     if ($echo) {
         echo $add_html;
     }
     return $add_html;
 }