消息：preg_match() 期望参数 2 是一个字符串，在 CodeIgniter 中导出数据时给出的数组

Question

我正在使用 CodeIgniter。我正在 excel sheet.

中导出数据

现在我正在做的是，我有 Payment option 和 Payment Details 列。

我必须在

这样的列中显示输出

if(Payment option == 'a'){
//display array in the column
}
else if(Payment option == 'b')
{
//display array in the column
}
else{
//
}

预期输出

我遇到错误

1)

A PHP Error was encountered
Severity: Notice
Message: Undefined offset: 0
Filename: Cell/DefaultValueBinder.php

2)

A PHP Error was encountered
Severity: Warning
Message: preg_match() expects parameter 2 to be string, array given
Filename: Cell/DefaultValueBinder.php

导出码

public function export_order_list(){
  $object = new PHPExcel();
  $object->setActiveSheetIndex(0);
  $table_columns = array("Customer Name","Email","Mobile no","Alternet no","Payment option","Payment Details","Date of created");
  $column = 0;
  $object->getActiveSheet()->getStyle('1:1')->getFont()->setBold(true);

  foreach($table_columns as $field)
  {
   $object->getActiveSheet()->setCellValueByColumnAndRow($column, 1, $field);

   $column++;
  }
  $export_list = $this->Customer_model->export_order_list_model();//getting all data
  $excel_row = 2;
  foreach($export_list as $row)
  {
   $cust_name=$row->c_firstname." " .$row->c_middlename."".$row->c_lastname;
   if ($row->payment_option=='A') {
         $payment_details=array(
          'Account holder name:' => $row->account_holder_name,
          'Account no:'=>$row->e_account_no,
          'Cheque no:'=>$row->cheque_no
         );

   }
   if ($row->payment_option=='b') {
      $payment_details=array(
        'Name On Card:' => $row->c_name_on_card,
        'Card Number:'=>$row->c_card_number,
       'Exp month'=>$row->c_exp_month,
       );
   }
   else{
     $payment_details="";
   }

   $object->getActiveSheet()->setCellValueByColumnAndRow(0, $excel_row, $cust_name);
   $object->getActiveSheet()->setCellValueByColumnAndRow(1, $excel_row, $row->c_email_id);
   $object->getActiveSheet()->setCellValueByColumnAndRow(2, $excel_row, $row->c_mobileno);
   $object->getActiveSheet()->setCellValueByColumnAndRow(3, $excel_row, $row->c_alternetno);
   $object->getActiveSheet()->setCellValueByColumnAndRow(4, $excel_row, $row->payment_option);
   $object->getActiveSheet()->setCellValueByColumnAndRow(5, $excel_row, $payment_details);
   $object->getActiveSheet()->setCellValueByColumnAndRow(6, $excel_row, $row->c_date_of_added);
   $excel_row++;
  }

  $object_writer = PHPExcel_IOFactory::createWriter($object, 'Excel5');
        header('Content-Type: application/vnd.ms-excel');
        header('Content-Disposition: attachment;filename="Order list.xls"');
        $object_writer->save('php://output');
 }

Answer 1

将此代码块数组更改为字符串

if ($row->payment_option=='A') {
     $payment_details='Account holder name:'.$row->account_holder_name.' Account no:'.$row->e_account_no.' Cheque no:'.$row->cheque_no;
}else if ($row->payment_option=='b') {
     $payment_details='Name On Card:'.$row->c_name_on_card.' Card Number:'.$row->c_card_number.'  Exp month'.$row->c_exp_month;
}else{
     $payment_details="";
}

Answer 2

添加

if(is_array($payment_details)){

    $result = array_map(function($k, $v){
        return "$k=$v";
    }, array_keys($payment_details), array_values($payment_details));

    $payment_details = implode(' ', $result);
}

之前

$object->getActiveSheet()->setCellValueByColumnAndRow(0, $excel_row, $cust_name);

消息：preg_match() 期望参数 2 是一个字符串，在 CodeIgniter 中导出数据时给出的数组

Message: preg_match() expects parameter 2 to be a string, array given while exporting the data in CodeIgniter

php

codeigniter-3

phpexcel