PHP $_POST returns only one item for SELECT multiple HTML tag

PHP developers decided that values posted from HTML select tag with attribute multiple, somehow overwrites some internal variable data. Basically it goes like this – you have the following form with a select tag: <form action=”/post.php” method=”post”>   <select name=”MyMultiSelect” multiple>     <option>one</option>     <option>two</option>     <option>three</option>     <option>four</option>   </select>   <input type=”submit” value=”send”> </form> and in PHP you try to …