13:40:55 Create new PHPExcel object
13:40:55 Set document properties
13:40:55 Add data
13:40:55 Set data validation
13:40:55 Write to Excel5 format

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13:40:55 File written to 15datavalidation-xls.xls
Call time to write Workbook was 0.0258 seconds
13:40:55 Current memory usage: 6 MB
13:40:55 Peak memory usage: 6 MB
13:40:55 Done writing file
File has been created in D:\dev\vsk\vendor\phpoffice\phpexcel\Examples