DATEVALUE

21:18:55 Converts a date in the form of text to a serial number.
21:18:55 Warning: The PhpSpreadsheet DATEVALUE() function accepts a wider range of date formats than MS Excel DATEFORMAT() function.
21:18:55 Date String: 26 March 2012
21:18:55 Formula: =DATEVALUE(A1)
21:18:55 Excel DateStamp: 40994
21:18:55 Formatted DateStamp2012-Mar-26
21:18:55
21:18:55 Date String: 29 Feb 2012
21:18:55 Formula: =DATEVALUE(A2)
21:18:55 Excel DateStamp: 40968
21:18:55 Formatted DateStamp2012-Feb-29
21:18:55
21:18:55 Date String: April 1, 2012
21:18:55 Formula: =DATEVALUE(A3)
21:18:55 Excel DateStamp: 41000
21:18:55 Formatted DateStamp2012-Apr-01
21:18:55
21:18:55 Date String: 25/12/2012
21:18:55 Formula: =DATEVALUE(A4)
21:18:55 Excel DateStamp: 41268
21:18:55 Formatted DateStamp2012-Dec-25
21:18:55
21:18:55 Date String: 2012-Oct-31
21:18:55 Formula: =DATEVALUE(A5)
21:18:55 Excel DateStamp: 41213
21:18:55 Formatted DateStamp2012-Oct-31
21:18:55
21:18:55 Date String: 5th November
21:18:55 Formula: =DATEVALUE(A6)