12:47:50 Create new PHPExcel object
12:47:50 Set document properties
12:47:50 Add data
12:47:50 Set data validation
12:47:50 Write to Excel5 format

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12:47:50 File written to 15datavalidation-xls.xls
Call time to write Workbook was 0.0421 seconds
12:47:50 Current memory usage: 4 MB
12:47:50 Peak memory usage: 4 MB
12:47:50 Done writing file
File has been created in D:\dev\vsk\vendor\phpoffice\phpexcel\Examples