> I'm not sure that there's any problem with the documentation > (although it wouldn't hurt to mention it in the comments). > What is it about "0000-00-00 00:00:00" that makes it an > invalid date? (See Christian's explanation)
Zero values for month and day are NOT valid. PHP treats them as valid, but according to GNU (on whose requirements strtotime's parsing is based, according to the docs), month values must be in the range of 1-12 and day values must be 1-31. Come to think of it, I wonder how PHP handles something like '2008-06-31' - does it treat that as July 1? Or does it call it an invalid date? Seems like the same sort of behavior - should be considered invalid, but I'm betting that PHP handles it transparently. The upshot is that we can't actually rely on strtotime to determine whether a string is a valid date/time. The docs don't ever explicitly say that the date strings themselves are checked for validity, but returning false on "failure" implies to me that it will return false if it can't get a *valid* date out of the string. Jack -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
