12:59:33 Create new PHPExcel object<br />12:59:33 Add some data and formulas<br />12:59:33 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 />12:59:33 Write to Excel2007 format<br />12:59:33 File written to 13calculationCyclicFormulae.xlsx<br />Call time to write Workbook was 0.0199 seconds<br />12:59:33 Current memory usage: 2 MB<br />12:59:33 Peak memory usage: 2 MB<br />12:59:33 Done writing file<br />File has been created in G:\myserver\www\shopee\PHPExcel-1.8\Examples<br />