Regarding the problem of setting column width in PHPExcle.

The code is as follows:
$objPHPExcel->getProperties()->setCreator("Maarten Balliauw")

        ->setLastModifiedBy("Maarten Balliauw")
        ->setTitle("Office 2007 XLSX Test Document")
        ->setSubject("Office 2007 XLSX Test Document")
        ->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.")
        ->setKeywords("office 2007 openxml php")
        ->setCategory("Test result file");

$objPHPExcel->getActiveSheet()->getColumnDimension('A')->setWidth (30);
Setting the width like this is completely invalid. What’s the reason? Looking forward to the answer, thank you.

Reply content:

The code is as follows:
$objPHPExcel->getProperties()->setCreator("Maarten Balliauw")

        ->setLastModifiedBy("Maarten Balliauw")
        ->setTitle("Office 2007 XLSX Test Document")
        ->setSubject("Office 2007 XLSX Test Document")
        ->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.")
        ->setKeywords("office 2007 openxml php")
        ->setCategory("Test result file");

$objPHPExcel->getActiveSheet()->getColumnDimension('A')- >setWidth(30);
Setting the width like this is completely invalid. What is the reason? Looking forward to the answer, thank you.