DATEVALUE

02:29:01 Converts a date in the form of text to a serial number.
02:29:01 Warning: The PhpSpreadsheet DATEVALUE() function accepts a wider range of date formats than MS Excel DATEFORMAT() function.
02:29:01 Date String: 26 March 2012
02:29:01 Formula: =DATEVALUE(A1)
02:29:01 Excel DateStamp: 40994
02:29:01 Formatted DateStamp2012-Mar-26
02:29:01
02:29:01 Date String: 29 Feb 2012
02:29:01 Formula: =DATEVALUE(A2)
02:29:01 Excel DateStamp: 40968
02:29:01 Formatted DateStamp2012-Feb-29
02:29:01
02:29:01 Date String: April 1, 2012
02:29:01 Formula: =DATEVALUE(A3)
02:29:01 Excel DateStamp: 41000
02:29:01 Formatted DateStamp2012-Apr-01
02:29:01
02:29:01 Date String: 25/12/2012
02:29:01 Formula: =DATEVALUE(A4)
02:29:01 Excel DateStamp: 41268
02:29:01 Formatted DateStamp2012-Dec-25
02:29:01
02:29:01 Date String: 2012-Oct-31
02:29:01 Formula: =DATEVALUE(A5)
02:29:01 Excel DateStamp: 41213
02:29:01 Formatted DateStamp2012-Oct-31
02:29:01
02:29:01 Date String: 5th November
02:29:01 Formula: =DATEVALUE(A6)