18:36:19 Create new PHPExcel object<br />18:36:19 Set document properties<br />18:36:19 Add some data<br />18:36:19 Add comments<br />18:36:19 Add rich-text string<br />18:36:19 Merge cells<br />18:36:19 Protect cells<br />18:36:19 Set cell number formats<br />18:36:19 Set column widths<br />18:36:19 Set fonts<br />18:36:19 Set alignments<br />18:36:19 Set thin black border outline around column<br />18:36:19 Set thick brown border outline around Total<br />18:36:19 Set fills<br />18:36:19 Set style for header row using alternative method<br />18:36:19 Unprotect a cell<br />18:36:19 Add a hyperlink to an external website<br />18:36:19 Add a hyperlink to another cell on a different worksheet within the workbook<br />18:36:19 Add a drawing to the worksheet<br />18:36:19 Add a drawing to the worksheet<br />18:36:19 Add a drawing to the worksheet<br />18:36:19 Play around with inserting and removing rows and columns<br />18:36:19 Set header/footer<br />18:36:19 Set page orientation and size<br />18:36:19 Rename first worksheet<br />18:36:19 Create a second Worksheet object<br />18:36:19 Add some data<br />18:36:19 Set the worksheet tab color<br />18:36:19 Set alignments<br />18:36:19 Set column widths<br />18:36:19 Set fonts<br />18:36:19 Add a drawing to the worksheet<br />18:36:19 Set page orientation and size<br />18:36:19 Rename second worksheet<br />18:36:19 Write to Excel5 format<br /><br />
<b>Fatal error</b>:  Uncaught Error: Call to undefined function imagepng() in /var/www/html/cleandoctors/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel5.php:484
Stack trace:
#0 /var/www/html/cleandoctors/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel5.php(148): PHPExcel_Writer_Excel5-&gt;_buildWorkbookEscher()
#1 /var/www/html/cleandoctors/vendor/phpoffice/phpexcel/Examples/14excel5.php(48): PHPExcel_Writer_Excel5-&gt;save('/var/www/html/c...')
#2 {main}
  thrown in <b>/var/www/html/cleandoctors/vendor/phpoffice/phpexcel/Classes/PHPExcel/Writer/Excel5.php</b> on line <b>484</b><br />