我正在使用PHPExcel构建一个WordPress插件来导出学生出勤报告。到目前为止,我能够成功获取学生数据(包括出勤)并将其转换并下载为电子表格。不幸的是,有一个奇怪的错误:当学生参加零事件时,电子表格上的那个单元格是空白而不是显示零。我更喜欢它实际为零,但我找不到办法做到这一点。这是我的剧本:
error_reporting( E_ALL);
ini_set( 'include_path', ini_get( 'include_path' ).';../Classes/' );
include 'PHPExcel.php';
include 'PHPExcel/Writer/Excel2007.php';
$objPHPExcel = new PHPExcel();
$objPHPExcel->setActiveSheetIndex( 0 );
$objPHPExcel->getProperties()->setCreator( $user );
$objPHPExcel->getProperties()->setLastModifiedBy( $user );
$objPHPExcel->getProperties()->setTitle( $title );
$objPHPExcel->getProperties()->setSubject( $title );
$objPHPExcel->getProperties()->setDescription( $title );
$objPHPExcel->getActiveSheet()->fromArray( $data, null, 'A1' );
$objPHPExcel->getActiveSheet()->getStyle('A1:H1')->getFont()->setBold(true);
$columns = array( 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H' );
foreach ( $columns as $column ) {
$objPHPExcel->getActiveSheet()->getColumnDimension($column)->setAutoSize(true);
} // End $columns foreach
$file_name = str_replace( ' ', '_', $title);
if ( $_POST['type'] == 'spreadsheet' ) {
header( 'Content-type: application/vnd.ms-excel' );
header( 'Content-Disposition: attachment; filename="' . $file_name . '.xls"' );
$objWriter = new PHPExcel_Writer_Excel2007( $objPHPExcel );
$objWriter->save( 'php://output' );
}
$ data包含学生信息数组,其结构如下:
Array (
[0] => Array (
[0] => First Name
[1] => Last Name
[2] => BU ID
[3] => Barcode
[4] => Major
[5] => Class
[6] => Seminars
[7] => Showcases
)
[1] => Array (
[first_name] => Seth
[last_name] => Abel
[buid] => B00385307
[barcode] => 100324707
[student_major] => CMM
[class] => MBU2100
[seminar] => 0
[showcase] => 1
)
[2] => Array (
[first_name] => Zachary
[last_name] => Abend
[buid] => B00373103
[barcode] => 100291996
[student_major] => MBU
[class] => MBU2100
[seminar] => 0
[showcase] => 1
)
.
.
.
)
正如您所看到的是示例数据,这些学生每人都参加了1次展示,但没有参加过零研讨会。下载此电子表格并在Excel中打开时,1显示正常,但研讨会单元格为空白。由于我使用fromArray()函数来填充电子表格,我是否应该做些什么才能使这些零值正确显示?
答案 0 :(得分:37)
我认为您是松散类型比较的受害者 - 您已将null
指定为fromArray()
的第二个参数,代表Value in source array that stands for blank cell
。由于null == 0
这意味着零将导致空白单元格,除非您将第四个参数设置为true
。
尝试更改:
$objPHPExcel->getActiveSheet()->fromArray( $data, null, 'A1' );
...到...
$objPHPExcel->getActiveSheet()->fromArray( $data, null, 'A1', true );