รบกวนผู้รู้ สอบถามการ where ของ sql ใส่ move option

<select name='mobiles[]' id='mobiles' multiple='multiple' style='width:190px;' >
    <option value='sam-s6edge'>Samsung S6 Edge</option>
    <option value='sam-note5'>Samsung Note5</option>
    <option value='sam-a7'>Samsung A7</option>
    <option value='iphone6s-plus'>Iphone 6S Plus</option>
    <option value='iphone6s'>Iphone 6S</option>
    <option value='iphone5s'>Iphone 5S</option>
</select><br />
Filter : <input type='search' id='searchTxt' />
<script type='text/javascript' src="https://code.jquery.com/jquery-1.11.3.min.js"></script>
<script type='text/javascript'>
$(document).ready(function(){
    var search,option;
	$("#searchTxt").on("keyup",function(e){
        search = $(this).val();
        $("#mobiles option").each(function(){
        	option = $(this);
            if(option.text().toLowerCase().indexOf(search) >= 0){
                option.css('display','block');
            }else{
            	option.css('display','none');
            }
        });
    });
});
</script>