26개 이상의 열이 포함된 Excel을 내보낼 때 PHPSpreadsheet에서 오류를 보고하면 어떻게 해야 합니까?

data_type= $data_type; $this->spread_sheet= $spread_sheet; $this->x_lsx= $x_lsx; } /** * @ description 文件导出 * @ date 2019-05-06 * @ array $field_name 字段名称 汉字(索引数组) ['产品','姓名'] * @ array $data 数据 ['a' => data, 'b' => data] * @ array $field_column 数据中的下标名称 字段数据 (索引数组) ['a','b'] * @ string $file_name 文件名称 * @ array $arr 需要转换为数字的$field_column中的key(索引数组) * @ return file */ public function export($field_name,$data,$field_column,$file_name,$field_numeric_keys= []) { @ob_clean(); if (empty($field_name)|| empty($field_column)|| empty($data)|| empty($file_name))return false; $sheet= $this->spread_sheet->getActiveSheet(); //设置header $i= 0; foreach ($field_name as $value) { $cellName= self::stringFromColumnIndex($i). "1"; $sheet->setCellValue($cellName, $value)->calculateColumnWidths(); $sheet->getColumnDimension(self::stringFromColumnIndex($i))->setWidth(15); $i++; } //设置value $len= count($field_column); foreach ($data as $key=> $item) { $row= 2 + ($key* 1); for ($i= 0; $i< $len; $i++) { $sheet->setCellValueExplicit(self::stringFromColumnIndex($i). $row, $item[$field_column[$i]]??"", DataType::TYPE_STRING); if (isset($item[$field_column[$i]])&& !empty($field_numeric_keys)&& in_array($field_column[$i],$field_numeric_keys)) { $sheet->setCellValueExplicit(self::stringFromColumnIndex($i). $row, $item[$field_column[$i]]??"", DataType::TYPE_NUMERIC); } } } $writer= new Xlsx($this->spread_sheet); header('Content-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');//告诉浏览器输出07Excel文件 header('Content-Disposition: attachment;filename="' . $file_name . '.xlsx"');//告诉浏览器输出浏览器名称 header('Cache-Control: max-age=0'); $writer->save('php://output'); @ob_flush(); @flush(); exit; } /** * @ description excel导出突破只能26个字段 * @ date 2019-05-07 * @ return string 字段 */ public static function stringFromColumnIndex($pColumnIndex = 0) { static $_indexCache= array(); if (!isset($_indexCache[$pColumnIndex])) { if ($pColumnIndex < 26) { $_indexCache[$pColumnIndex]= chr(65 + $pColumnIndex); }elseif ($pColumnIndex < 702) { $_indexCache[$pColumnIndex]= chr(64 + ($pColumnIndex / 26)). chr(65 + $pColumnIndex % 26); }else { $_indexCache[$pColumnIndex]= chr(64 + (($pColumnIndex - 26)/ 676)). chr(65 + ((($pColumnIndex - 26)% 676)/ 26)). chr(65 + $pColumnIndex % 26); } } return $_indexCache[$pColumnIndex]; } }