10:12:21 Create new PHPExcel object
10:12:21 Add some data and formulas
10:12:21 Calculated data
Value of A1 [=B1]: 100
Value of B1 [=A1+1]: 100
Value of A2 [=B2+1]: 100
Value of B2 [=A2]: 99
10:12:21 Write to Excel2007 format
10:12:21 File written to 13calculationCyclicFormulae.xlsx
Call time to write Workbook was 0.0068 seconds
10:12:21 Current memory usage: 6 MB
10:12:21 Peak memory usage: 6 MB
10:12:21 Done writing file
File has been created in /var/www/html/examcontroller-web/vendor/phpoffice/phpexcel/Examples