Phpexcel reports an error: err_ INVALID_ RESPONSE

One 、 A scenario

• stay thinkphp Use... In the framework phpoffice/phpexcel, Direct export Excel Form browser download , Report errors ：ERR_INVALID_RESPONSE

• Be careful ： stay Local windows Environmental Science No problem exporting , stay on-line Linux Environmental Science This problem only occurs .

• Screenshot of the problem ：

Two 、 Find a solution

1、 Online solutions

1）、 Buffer problem

• Calling save("php://output") Previous call ob_clean(), Part of the code is as follows

        ob_clean(); // Empty cache 

        // Finally, output through the browser 
        $fn = " Name of file (" . date("Y.m.d") . ").xls";    // File name to save 
        header('Content-Type: application/vnd.ms-excel; charset=utf-8');
        header("Content-Disposition: attachment;filename={
      $fn}");
        header('Cache-Control: max-age=0');
        $objWriter = \PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
        $objWriter->save('php://output');
        exit;

2）、factory581 Bank error , Delete break

• factory581 Bank error , Delete break;

PHPExcel\Calculation\Functions.php file , Delete the 581 Yes break

• our phpoffice/phpexcel yes composer Installed , Every update has to change the source code , It is not recommended to modify the source code , Even if it can solve the problem , Nor will it be adopted .

2、 My solution to this problem ,Linux Lower installation zip Expand

• 【 solve 】 My question is Linux Lack of zip Expand , Can be installed ~

3、 ... and 、zip Expand

• windows Under the php（ My version is 7.3.3） Is bringing zip Extended ,php/ext There are none in the directory php_zip.dll file , As shown in the figure

• Linux Under the php No installation zip Expand