javascript - 如何通过表单数据和 Ajax PHP 保存数组

Question

如何通过formdata将多选的所有值与文件一起保存。它总是显示文件“foreach() 的参数无效”。即使文件已保存到各自的文件夹中，但多选选项并未进入 foreach 并保存到数据库中。

警告:foreach() 中提供的参数无效

我正在使用以下代码。

HTML

<!--JQUERY-->
    <script type="text/javascript" src="https://code.jquery.com/jquery-1.12.3.min.js"></script>
    <!--Bootstrap 3.3.7-->
    <script type="text/javascript" src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
    <link rel="stylesheet" type="text/css" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
 <!--Font-awesome 4.7.0-->
    <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">

<button class="btn btn-success addnewjob" data-toggle="modal" data-target="#add_new_record_modal">Add New Job</button>


<!-- Modal - Add New Record/User -->
<div class="modal fade bs-example-modal-lg" id="add_new_record_modal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
  <div class="modal-dialog modal-lg" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
        <h4 class="modal-title" id="myModalLabel">Add New Record</h4>
      </div>
      <div class="modal-body">
        <div class="row">
          <div class="col-xs-12 col-sm-12 col-md-12 col-lg-12">
            <select name="test[]" id="sbTwo" multiple="multiple" class="form-control">
              <option value="PAPER CUP">PAPER CUP</option>
              <option value="PAPER BOWL">PAPER BOWL</option>
              <option value="PAPER PLATE">PAPER PLATE</option>
              <option value="PAPER BAG">PAPER BAG</option>
            </select>
          </div>

          <div class="col-xs-12 col-sm-12 col-md-3 col-lg-3">
            <label for="jspec_filedoc">DOC Files</label>
            <div class="input-group">
              <label class="input-group-btn">
                <span class="btn btn-info">
                                                        <span class="fa fa-file-image-o"></span>
                <input id="jspec_filedoc" name="jspec_filedoc" type="file" accept=".doc, .docx,.xlsx" style="display: none;" multiple>
                </span>
              </label>
              <input type="text" class="form-control" id="existingaifile" placeholder="Document File" readonly>
            </div>
          </div>

        </div>
        <div class="modal-footer">
          <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
          <button type="submit" class="btn btn-primary" onclick="addRecord()">Add Record</button>
        </div>
      </div>
    </div>
  </div>
  <!-- // Modal -->

脚本

function addRecord() {

  var conf = confirm("Are you sure, do you really want to APPROVE this file?");
  if (conf == true) {
    // get values

    $('#sbTwo option').prop('selected', true); //select all data in multiselect
    var test = $("#sbTwo").val();
    var pj_schednum = $('#pj_schednum').val();
    var jspec_filedoc = $('#jspec_filedoc').prop('files')[0];

    var form_data = new FormData();
    form_data.append('jspec_filedoc', jspec_filedoc);
    form_data.append('pj_schednum', pj_schednum);
    alert(form_data.append('test', test));

    $.ajax({
      url: 'ajax/createjob.php',
      dataType: 'text',
      cache: false,
      contentType: false,
      processData: false,
      data: form_data,
      type: 'POST',
      success: function(data) {
        alert(data);
      }
    });
  }
}

$(document).ready(function() {
  $(function() {

    $(document).on('change', ':file', function() {
      var input = $(this),
        numFiles = input.get(0).files ? input.get(0).files.length : 1,
        label = input.val().replace(/\\/g, '/').replace(/.*\//, '');
      input.trigger('fileselect', [numFiles, label]);
    });

    $(document).ready(function() {
      $(':file').on('fileselect', function(event, numFiles, label) {
        var input = $(this).parents('.input-group').find(':text'),
          log = numFiles > 1 ? numFiles + ' files selected' : label;

        if (input.length) {
          input.val(log);
        } else {
          if (log) alert(log);
        }
      });
    });
  });
});

PHP

<?php
    if(isset($_POST['pj_schednum']) && isset($_POST['test']) && isset($_FILES['jspec_filedoc']))
    {
        // include Database connection file 
        include("db_connection.php");

        //get current date with 24 hours time format
        date_default_timezone_set('Asia/Manila');
        $a = date('m/d/Y H:i:s'); 
        $b = date('m/d/Y h:i A', strtotime($a));
        $z = date('mdYHis');    

        // get values 
        $file_name3 = explode(".", $_FILES['jspec_filedoc']['name']); 
        $new_name3 = rand() . '.'. $file_name3[1];  
        $sourcePath3 = $_FILES["jspec_filedoc"]["tmp_name"];
        $savethisname3='JT'.$z.$new_name3;        
        $targetPath3 = "../bin/jobs_attachments/docfile/".$savethisname3;  
        move_uploaded_file($sourcePath3, $targetPath3);  


        $i = 0;
        foreach ($_POST['test'] as $operation_processname){  
            echo $operation_processname."\n";

            $operation_step=$i++;//The steps

            $query = "INSERT INTO operation (o_name, o_step, o_doc, o_added) VALUES('$operation_processname', '$operation_step','$savethisname','$b')";
            if (!$result = mysqli_query($db, $query)) {
                exit(mysqli_error());
            }
        }

        echo "1 Record Added!";
    }
?> 

结果

+-----------------------------------+
+o_name| o_step| o_doc| o_added     |
+-----------------------------------+
|PAPER CUP |0 |doc1.docx | 01/11/2017 05:16:45 PM|
|PAPER BOWL|0 |doc2.docx | 01/12/2017 05:16:45 PM|
|PAPER PLATE|0 |doc3.docx | 01/13/2017 05:16:45 PM|
|PAPER BAG|0 |doc4.docx | 01/14/2017 05:16:45 PM|
+------------------------------------------------+

Answer 1

您可以通过 var test = $("#sbTwo").val(); 发送数据。因此，当您从 php 访问时，它将作为字符串访问，例如 item1,item2 .所以尝试explode首先在循环之前。

$test = explode(",",$_POST['test']);