html

<button class="batchdel" id="submitbatchdel" type="submit">
    <a href="" onclick="if(confirm('确定要删除数据吗？')) return true;else return false;">批量删除</a>
</button>

jQuery

$("#submitbatchdel").bind('click', function () {
        var selectItem = new Array();
        $("input[name='batchdel']:checked").each(function() {
            selectItem.push($(this).val());//在数组中追加元素
        });
        $('.active').html('');
        if (selectItem == '') {
            errorDis('请选择图片');
            return false;
        }
    $.ajax({
        url: "del/batchdel",
        type: 'POST',
        dataType: 'json',
        data: 'items=' + selectItem.join(","),
        success: function (data) {
            if (data.code == 200) {
                errorDis(data.info);
                refresh();
            } else {
                errorDis(data.info);
                return false;
            }
        }
    });
});

php

public function batchdelAction() {
        //接收到的图片id字符串
        $items=$_POST['items'];
        $photoModel = new Model_Photo();
        $where = "id in(".$items.")";
        $res = $photoModel->deletePhoto($where);
        if($res){
            exit(json_encode(array('code'=>200, 'info'=>"图片删除成功")));
        }else{
            exit(json_encode(array('code'=>-1, 'info'=>"删除失败")));
        }
}