<form action='<?=base_url();?>index.php/admin/add_news'     method="post" enctype="multipart/form-data" >
    <input type="text" name="title" >
    <input type="text" name="texts">
    <input type="text"  name="textf">
    <input type="date" name="date">
    <input type="text"  name="img_id">

    <input type="submit"  name="sub">
</form>

function add_news()
                {            
                    echo $_POST['title'];
                    
                }