将数组php传递给json给出未定义 [英] Passing array php into json gives undefined

问题描述

我想将JSON从php传递到js.

I want to pass a JSON from php to js.

这是我的php文件:

 public function upload() {
    $record = 0;
    if (!empty($_FILES)) {
        $config['upload_path'] = "./assets/uploads";
        $config['allowed_types'] = 'csv';

        $this->load->library('upload', $config);
        if (!$this->upload->do_upload("file")) {
            echo "File cannot be uploaded";
        } else {
            $upload_data = $this->upload->data();
            $csv = $upload_data['full_path'];
            $name_csv = $upload_data['file_name'];
            $tryOne = array();

            if (file_exists($csv)) {
                $file = fopen($csv, 'r'); // r flag is for readonly mode

                while (( $line = fgetcsv($file) ) !== false) { // if line exists
                    $tryOne[] = $line; // add to array
                }

                fclose($file);
            }

            echo json_encode(array(
                "nama_csv" => $name_csv,
                "path" => $csv,
                "isi" => $tryOne
            ));
        }
    } elseif ($this->input->post('file_to_remove')) {
        $file_to_remove = $this->input->post('file_to_remove');
        unlink("./assets/uploads/" . $file_to_remove);
    } else {
        $this->listFiles();
    }
}

请在mv json中查看.我调试它:print_r($tryOne);

Please see in mv json. I debug it : print_r($tryOne);

Array
(
[0] => Array
    (
        [0] => NO
        [1] => COLUMN1
        [2] => COLUMN2
        [3] => COLUMN3
        [4] => COLUMN4
        [5] => COLUMN5
        [6] => COLUMN6
        [7] => COLUMN7
        [8] => COLUMN8
        [9] => COULMN9
        [10] => COLUMN10
        [11] => COLUMN11
        [12] => COLUMN12
        [13] => COLUMN13
    )

[1] => Array
    (
        [0] => 1
        [1] => NYK FUJI                      
        [2] => AJU150708 
        [3] =>                     
        [4] => 6C7132    
        [5] => 977NEF    
        [6] => JKT-P.T.IRON WORKS            
        [7] => 977NEF    
        [8] => KCH8ATDM  
        [9] => 17.9
        [10] => 1690
        [11] => 2150
        [12] => 6C7132-1690         
        [13] => 175
    )

[2] => Array
    (
        [0] => 2
        [1] => NYK FUJI                      
        [2] => AJU150708 
        [3] =>                     
        [4] => 6C7132    
        [5] => 977NEF    
        [6] => JKT-P.T.IRON WORKS            
        [7] => 977NEF    
        [8] => KCH8ATDM  
        [9] => 17.9
        [10] => 1700
        [11] => 2138
        [12] => 6C7132-1700         
        [13] => 176
    )

)

一切都很好.但是在ajax成功中:

Everything looks fine. But in ajax success :

 success: function (response) {
                    moment.locale("id");
                    for (i = 0; i <= response.isi.length; i++) {
                        for (j = 0; j <= response.isi[i].length; j++) {
                            $('#table-review').find('tbody').append("<tr>" +
                                    "<td>" + response.isi[i][j] + "</td>" +
                                    "</tr>");
                        }
                    }
                    $("#btnSave").attr("onclick", "save('" + response.path + "', '" + response.nama_csv + "')");

                    $('#modal_form').modal('show'); // show bootstrap modal
                    $('.modal-title').text('Review Data Hasil Upload Dari CSV Pusat'); // Set Title to Bootstrap modal title


                    reload_table();
                    listFilesOnServer();
                },

给我: TypeError:response.isi [i]未定义

我想在模式引导程序中将此数组显示到表中，所以我再次对其进行调试以查看response.isi是否存在:console.log(response.isi)

I want to display this array into a table in modal bootstrap, so i debug it again to see if response.isi is exist : console.log(response.isi)

 [["NO", "COLUMN1", "COLUMN2", 11 more...]

我有点困惑，为什么在php数组和js数组中看起来不同， 在php中，元素被分隔为元素，但是在js中，以逗号分隔.

I little confused, why in php array and js array looks like different, in php is separated into element, but in js is separated by comma.

更新

根据下面的建议，我得到了这样的回调:

Based suggestion below, I got a callback like this :

 Object { 0="NO",  1="COLUMN1",  2="COLUMN2",  more...}
 Object { 0="1",  1="NYK FUJI",  2="AJU150708 ",  more...}
 Object { 0="2",  1="NYK FUJI",  2="AJU150708 ",  more...}

所以，我使用这样的循环:

So, I use for looping like this :

 index = 1;
  $.each(response.isi, function (i, item) {
  $('#table-review').find('tbody').append("<tr>" +
      "<td>" + index + "</td>" +
      "<td>" + item.i + "</td>" +
      "</tr>");
    index++;
    console.log(item);
  });

它给了我:

+---+-----------+
| 1 | undefined |
| 2 | undefined |
| 3 | undefined |
+---+-----------+

请告知.

推荐答案

对于更新后的错误:

您正在循环中访问错误的索引.查看更正的代码:

You are accessing the wrong index in your loop. See the corrected code:

var index = 1;
$.each(response.isi, function (i, item) {
$('#table-review').find('tbody').append("<tr>" +
    "<td>" + index + "</td>" +
    //"<td>" + item.i + "</td>" + // wrong: i doesn't exist as a property of item
    "<td>" + item[i] + "</td>" + // right: item array at index i will work
    "</tr>");
  index++;
  console.log(item);
});

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