function keywords($field, $value, $fieldinfo) {
		extract($fieldinfo);
        $require = $min_length ? 'required ' : '';
        if(!$value) $value = isset($default_value)?$default_value:'';
        $string =  '<div class="mb-3 row  '.$require.'">';
        $string .= '<label class="col-md-2 col-form-label">'.$fieldinfo['name'].'</label>';
        $string .= '<div class="col-md-10">';
        $string .= '<input type="text" name="info['.$field.']"  value="'.$value.'"  autocomplete="off" class="form-control  '.$require.'"  '.$form_attribute.'   style="'.$css.'">';
        $string .=  $fieldinfo['tips']?'<div class="text-muted  input-word-aux">提示：'.$fieldinfo['tips'].'</div>':'';
        $string .= '</div>';
        $string .= '</div>';
        return $string;
	}