19:23:42 Create new PHPExcel object<br />19:23:42 Add some data and formulas<br />19:23:42 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 />19:23:42 Write to Excel2007 format<br />19:23:42 File written to 13calculationCyclicFormulae.xlsx<br />Call time to write Workbook was 0.0056 seconds<br />19:23:42 Current memory usage: 2 MB<br />19:23:42 Peak memory usage: 2 MB<br />19:23:42 Done writing file<br />File has been created in /var/www/html/test/public/vendor/phpoffice/phpexcel/Examples<br />