18:21:24 Create new PHPExcel object<br />18:21:24 Add some data and formulas<br />18:21:24 Calculated data<br />Value of A1 [=B1]: 100<br />Value of B1 [=A1+1]: 100<br />Value of A2 [=B2+1]: 100<br />Value of B2 [=A2]: 99<br />18:21:24 Write to Excel2007 format<br />18:21:24 File written to 13calculationCyclicFormulae.xlsx<br />Call time to write Workbook was 0.0114 seconds<br />18:21:24 Current memory usage: 11 MB<br />18:21:24 Peak memory usage: 12 MB<br />18:21:24 Done writing file<br />File has been created in /var/www/loyalworld/vendor/phpoffice/phpexcel/Examples<br />