我需要您的宝贵帮助/建议！我已经在Laravel中创建了一个表单。用户插入一些数据，然后提交，他/她选择了一个.csv文件进行上传。我希望将该文件插入现有的（oracle）数据库表中，以运行查询并将结果导出为pdf。但是我得到了未定义的偏移量：8错误
我已经在cmd运行php artisan make：migration create_csv_data_table，并创建了表字段到database \ migrations csv_data_table。我已经将此迁移到数据库（使用php artisan migration），并将表csv_data创建到我的oracle数据库中。我还创建了对应模型（使用php artisan make：model Csvdata）。在下面您可以看到我的代码：
1）这是我的web.php摘录
Route::get('/diploma', 'PdfController@quest');
Route::post('/hard', 'PdfController@job');
Route::get('/p', 'PdfController@pointer');
Route::get('/export1','PdfController@export1')->name('export1.pdf');
2）这是我在其中输入数据的表单：
<form method='post' enctype="multipart/form-data" action="/hard">
{{csrf_field()}}
<section>
<br>
<legend><i><b> Συμπλήρωση Στοιχείων Παραρτήματος Διπλώματος</b></i></legend>
<br>
</section>
<section>
Επιλογή Προγράμματος Σπουδών:
<select name="sc" id="xaos">
<optgroup label="postgraduates">
@foreach($transport as $y)
<option value="{{$y->object_id}}">{{$y->object_name}}</option>
@endforeach
</optgroup>
</select>
</section>
<br>
<section>
Αριθμός Μητρώου Φοιτητή:
<input name='am' type='number' min="1000000" max="1999999" required="" oninvalid="this.setCustomValidity('1000000 < Τιμή < 1999999')">
</section>
<br>
<section>
Επιλογή Γλώσσας:
<select name="language" id="lang">
<option value="GR"> Greek</option>
<option value="EN"> English</option>
</select>
</section>
<br>
<section>
<label for="upload-file">select csv file</label>
<input type="file" name="upload-file" class="form-control">
</div>
<input class="btn btn-success" type="submit" value="Upload " name="submit">
<section>
<br>
<input type='submit' value="Submit!">
</section>
</form>
3）这是迁移文件类：
class CreateCsvDataTable extends Migration
{
/**
* Run the migrations.
*
* @return void
*/
public function up()
{
Schema::create('csv_data', function (Blueprint $table)
{
$table->integer('ac1')-> nullable();
$table->string('ac2')-> nullable();
$table->string('ac3')-> nullable();
$table->integer('ac4')-> nullable();
$table->integer('ac5')-> nullable();
$table->string('ac6')-> nullable();
$table->integer('ac7')-> nullable();
$table->string('ac8')-> nullable();
$table->string('ac9')-> nullable();
$table->integer('ac10')-> nullable();
$table->integer('ac11')-> nullable();
$table->integer('ac12')-> nullable();
$table->integer('ac13')-> nullable();
$table->float('ac14')-> nullable();
$table->integer('ac15')-> nullable();
$table->integer('ac16')-> nullable();
$table->integer('ac17')-> nullable();
$table->string('ac18')-> nullable();
$table->string('ac19')-> nullable();
$table->string('ac20')-> nullable();
$table->string('ac21')-> nullable();
$table->integer('ac22')-> nullable();
$table->float('ac23')-> nullable();
$table->string('ac24')-> nullable();
$table->float('ac25')-> nullable();
$table->float('ac26')-> nullable();
$table->string('ac27')-> nullable();
$table->float('ac28')-> nullable();
$table->string('ac29')-> nullable();
$table->string('ac30')-> nullable();
$table->string('ac31')-> nullable();
$table->string('ac32')-> nullable();
$table->integer('ac33')-> nullable();
$table->string('ac34')-> nullable();
$table->string('ac35')-> nullable();
$table->string('ac36')-> nullable();
$table->string('ac37')-> nullable();
$table->string('ac38')-> nullable();
$table->string('ac39')-> nullable();
$table->string('ac40')-> nullable();
$table->string('ac41')-> nullable();
$table->integer('ac42')-> nullable();
$table->date('ac43')-> nullable();
$table->string('ac44')-> nullable();
$table->string('ac45')-> nullable();
$table->string('ac46')-> nullable();
$table->string('ac47')-> nullable();
$table->string('ac48')-> nullable();
$table->string('ac49')-> nullable();
$table->string('ac50')-> nullable();
$table->string('ac51')-> nullable();
$table->string('ac52')-> nullable();
$table->string('ac53')-> nullable();
$table->string('ac54')-> nullable();
$table->integer('ac55')-> nullable();
$table->integer('ac56')-> nullable();
$table->integer('ac57')-> nullable();
$table->integer('ac58')-> nullable();
$table->integer('ac59')-> nullable();
$table->string('ac60')-> nullable();
$table->string('ac61')-> nullable();
$table->string('ac62')-> nullable();
$table->integer('ac63')-> nullable();
$table->date('ac64')-> nullable();
$table->date('ac65')-> nullable();
$table->date('ac66')-> nullable();
$table->string('ac67')-> nullable();
$table->integer('ac68')-> nullable();
$table->string('ac69')-> nullable();
$table->integer('ac70')-> nullable();
$table->integer('ac71')-> nullable();
$table->string('ac72')-> nullable();
$table->string('ac73')-> nullable();
});
}
/**
* Reverse the migrations.
*
* @return void
*/
public function down()
{
Schema::dropIfExists('csv_data');
}
}
4）这是控制器节选（当在我的表单上按Upload时，我得到未定义的偏移量：8错误并显示$ csv_data-> ac9 = $ data [8]；已标记）
public function job(Request $p)
{
$a1 = $p -> get('sc'); //όνομα προγράμματος
$a2 = $p -> get('am'); //αριθμός μητρώου φοιτητή
$a3 = $p -> get('language'); //γλώσσα
if (($handle = fopen ( 'MOCK_DATA.csv', 'r' )) !== FALSE)
{
while ( ($data = fgetcsv ( $handle, 1000, ',' )) !== FALSE )
{
{
$csv_data = new Csvdata ();
$csv_data->ac1 =$data [0];
$csv_data->ac2 =$data [1];
$csv_data->ac3 =$data [2];
$csv_data->ac4 =$data [3];
$csv_data->ac5 =$data [4];
$csv_data->ac6 =$data [5];
$csv_data->ac7 =$data [6];
$csv_data->ac8 =$data [7];
$csv_data->ac9 =$data [8];
$csv_data->ac10 =$data [9];
$csv_data->ac11 =$data [10];
$csv_data->ac12 =$data [11];
$csv_data->ac13 =$data [12];
$csv_data->ac14 =$data [13];
$csv_data->ac15 =$data [14];
$csv_data->ac16 =$data [15];
$csv_data->ac17 =$data [16];
$csv_data->ac18 =$data [17];
$csv_data->ac19 =$data [18];
$csv_data->ac20 =$data [19];
$csv_data->ac21 =$data [20];
$csv_data->ac22 =$data [21];
$csv_data->ac23 =$data [22];
$csv_data->ac24 =$data [23];
$csv_data->ac25 =$data [24];
$csv_data->ac26 =$data [25];
$csv_data->ac27 =$data [26];
$csv_data->ac28 =$data [27];
$csv_data->ac29 =$data [28];
$csv_data->ac30 =$data [29];
$csv_data->ac31 =$data [30];
$csv_data->ac32 =$data [31];
$csv_data->ac33 =$data [32];
$csv_data->ac34 =$data [33];
$csv_data->ac35 =$data [34];
$csv_data->ac36 =$data [35];
$csv_data->ac37 =$data [36];
$csv_data->ac38 =$data [37];
$csv_data->ac39 =$data [38];
$csv_data->ac40 =$data [39];
$csv_data->ac41 =$data [40];
$csv_data->ac42 =$data [41];
$csv_data->ac43 =$data [42];
$csv_data->ac44 =$data [43];
$csv_data->ac45 =$data [44];
$csv_data->ac46 =$data [45];
$csv_data->ac47 =$data [46];
$csv_data->ac48 =$data [47];
$csv_data->ac49 =$data [48];
$csv_data->ac50 =$data [49];
$csv_data->ac51 =$data [50];
$csv_data->ac52 =$data [51];
$csv_data->ac53 =$data [52];
$csv_data->ac54 =$data [53];
$csv_data->ac55 =$data [54];
$csv_data->ac56 =$data [55];
$csv_data->ac57 =$data [56];
$csv_data->ac58 =$data [57];
$csv_data->ac59 =$data [58];
$csv_data->ac60 =$data [59];
$csv_data->ac61 =$data [60];
$csv_data->ac62 =$data [61];
$csv_data->ac63 =$data [62];
$csv_data->ac64 =$data [63];
$csv_data->ac65 =$data [64];
$csv_data->ac66 =$data [65];
$csv_data->ac67 =$data [66];
$csv_data->ac68 =$data [67];
$csv_data->ac69 =$data [68];
$csv_data->ac70 =$data [69];
$csv_data->ac71 =$data [70];
$csv_data->ac72 =$data [71];
$csv_data->ac73 =$data [72];
$csv_data->save ();
}
fclose ( $handle );
}
$finalData = $csv_data::all ();
dd($finalData);