11:48:03 Create new PHPExcel object
11:48:03 Set document properties
11:48:03 Add some data
11:48:03 Add comments
11:48:03 Add rich-text string
11:48:03 Merge cells
11:48:03 Protect cells
11:48:03 Set cell number formats
11:48:03 Set column widths
11:48:03 Set fonts
11:48:03 Set alignments
11:48:03 Set thin black border outline around column
11:48:03 Set thick brown border outline around Total
11:48:03 Set fills
11:48:03 Set style for header row using alternative method
11:48:03 Unprotect a cell
11:48:03 Add a hyperlink to an external website
11:48:03 Add a hyperlink to another cell on a different worksheet within the workbook
11:48:03 Add a drawing to the worksheet
11:48:03 Add a drawing to the worksheet
11:48:03 Add a drawing to the worksheet
11:48:03 Play around with inserting and removing rows and columns
11:48:03 Set header/footer
11:48:03 Set page orientation and size
11:48:03 Rename first worksheet
11:48:03 Create a second Worksheet object
11:48:03 Add some data
11:48:03 Set the worksheet tab color
11:48:03 Set alignments
11:48:03 Set column widths
11:48:03 Set fonts
11:48:03 Add a drawing to the worksheet
11:48:03 Set page orientation and size
11:48:03 Rename second worksheet
11:48:03 Write to Excel5 format
Fatal error: Uncaught Error: Call to undefined function imagepng() in /var/www/tsf-audio-bitrate/html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel5.php:470
Stack trace:
#0 /var/www/tsf-audio-bitrate/html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel5.php(136): PHPExcel_Writer_Excel5->buildWorkbookEscher()
#1 /var/www/tsf-audio-bitrate/html/vendor/phpoffice/phpexcel/Examples/14excel5.php(48): PHPExcel_Writer_Excel5->save('/var/www/tsf-au...')
#2 {main}
thrown in /var/www/tsf-audio-bitrate/html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel5.php on line 470