18:33:01 Create new PHPExcel object<br />18:33:01 Add some data and formulas<br />18:33:01 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 />18:33:01 Write to Excel2007 format<br />18:33:01 File written to 13calculationCyclicFormulae.xlsx<br />Call time to write Workbook was 0.1012 seconds<br />18:33:01 Current memory usage: 4 MB<br />18:33:01 Peak memory usage: 4 MB<br />18:33:01 Done writing file<br />File has been created in /home/imevent/public_html/vendor/phpoffice/phpexcel/Examples<br />