jquery serializeArray to JSON multiselect in form

我有一个里面有多选的表单。提交时，我有这个功能：

$( "#addTrainForm" ).submit(function( event ) {
    var dataString = $(this).serializeArray();
    console.log(dataString);
    event.preventDefault();
    $.ajax({  
        type: "POST",  
        url: "/index.php/trainings/insertTraining",
        data: dataString,
        dataType: 'json',
        success: function(data) {  
            $("div#addModal").hide();
            location.reload();
        }  
    });
    return false;
});

现在，您可以在其中看到控制台日志，我得到以下内容：

0: Object
name: "date"
value: "14/10/2013 16:22:46"
__proto__: Object
1: Object
name: "pool"
value: "1"
__proto__: Object
2: Object
name: "repeat_0"
value: "1"
__proto__: Object
3: Object
name: "distance_0"
value: "1"
__proto__: Object
4: Object
name: "style_0"
value: "1"
__proto__: Object
5: Object
name: "change_0"
value: "1"
__proto__: Object
6: Object
name: "time_0"
value: "1"
__proto__: Object
7: Object
name: "options_0"
value: "1"
__proto__: Object
8: Object
name: "options_0"
value: "2"
__proto__: Object
9: Object
name: "repeat_1"
value: "2"
__proto__: Object
10: Object
name: "distance_1"
value: "2"
__proto__: Object
11: Object
name: "style_1"
value: "1"
__proto__: Object
12: Object
name: "change_1"
value: "2"
__proto__: Object
13: Object
name: "time_1"
value: "2"
__proto__: Object
14: Object
name: "options_1"
value: "4"
__proto__: Object
15: Object
name: "options_1"
value: "5"
__proto__: Object
16: Object
name: "options_1"
value: "6"

在哪里可以看到options_0和options_1有多个值。

现在在调用的 php 函数中，我读取了所有帖子数据并将其写入文件：

public function insertTraining(){
    $data=$this->input->post();
    $this->baselib->logIt(print_R($data,true));
}

在那里，我的options_0和options_1只有最后一个可用的值。我期待更多的值数组或组合字符串或其他东西。这是我在文本文件上的登录的样子：

Array
(
    [date] => 14/10/2013 16:22:46
    [pool] => 1
    [repeat_0] => 1
    [distance_0] => 1
    [style_0] => 1
    [change_0] => 1
    [time_0] => 1
    [options_0] => 2
    [repeat_1] => 2
    [distance_1] => 2
    [style_1] => 1
    [change_1] => 2
    [time_1] => 2
    [options_1] => 6
)

如何将 php 脚本的options_0和options_1的所有值获取？有没有更好的方法来使用我已经是的函数（比如可选参数？），或者我是否必须对所有值运行一个循环并找到选项值并将它们放入数组中，然后使用 json 将其发送到 PHP？

希望我设法解释自己，谢谢詹姆斯