01:07:24 Create new PHPExcel object<br />01:07:25 Add some data and formulas<br />01:07:25 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 />01:07:25 Write to Excel2007 format<br />01:07:25 File written to 13calculationCyclicFormulae.xlsx<br />Call time to write Workbook was 0.2173 seconds<br />01:07:25 Current memory usage: 4 MB<br />01:07:25 Peak memory usage: 4 MB<br />01:07:25 Done writing file<br />File has been created in /home/imevent/public_html/vendor/phpoffice/phpexcel/Examples<br />