04:09:51 Read Slk format from /var/www/html/testcheckout/vendor/phpoffice/phpspreadsheet/samples/Basic/../templates/SylkTest.slk in 0.0048 seconds 04:09:51 Write Xlsx format to /tmp/phpspreadsheet/20_Read_Sylk.xlsx in 0.0040 seconds 04:09:51 Write Xls format to /tmp/phpspreadsheet/20_Read_Sylk.xls in 0.0027 seconds 04:09:51 Peak memory usage: 2MB