mktime

i have a date '07/23/2009' and a time '18:11' and i want to get a timestamp out of it : here is my example: date_default_timezone_set('UTC'); $d = str_replace('/', ', ', '07/23/2009'); $t = str_replace(':', ', ', '18:11'); $date = $t.', 0, '.$d; echo $date; echo '<br>'; echo $x = mktime("$date"); the issue is that $x gives me the current timestamp. any ideas? divyang asodiya it gives error because mktime function require all values of numbers only and this function gives only date . if you try like $h = 18; $i = 11; $s = 00; $m = 07; $d =23; $y = 2009; echo date("h-i-s-M-d-Y",mktime($h,$i,$s,

I am using the mktime(struct tm*) function in Suse 10. Now, I am noticing some strange behaviour when daylight saving time is enabled. Let's say I have enabled daylight saving time to begin on Sep 15 at 18:10 and the daylight correction is for 30 minutes. Now, when I call mktime with tm structure having the date as Sep 15 18:10 and tm_isdst is set to 0, then I get back the same values in the tm structure only with the tm_isdst set to 1. But, if the pass the date as Sep 15 18:10 with tm_isdst set to 1, then I find the time changed to 17:40. This correction in the tm structure is noticed for

strtotime() in PHP works great if you can provide it with a date format it understands and can convert, but for example you give it a UK date it fails to give the correct unix timestamp. Is there any PHP function, official or unofficial, that can accept a format variable that tells the function in which format the date and time is being passed? The closest I have come to doing this is a mixture of date_parse_from_format() and mktime() // Example usage of the function I'm after //Like the date() function but in reverse $timestamp = strtotimeformat("03/05/2011 16:33:00", "d/m/Y H:i:s"); If you

I saw a lot of different views so thought of asking here. I read man mktime : (A positive or zero value for tm_isdst causes mktime() to presume initially that summer time (for example, Daylight Saving Time) is or is not in effect for the specified time, respectively. A negative value for tm_isdst causes the mktime() function to attempt to divine whether summer time is in effect for the specified time. My question is, shouldn't tm_isdst be kept as -1 to let the system decide if its dst or not and that way the code becomes dst agnostic? Am I missing something? I believe the original reason for

Why the leading zero in the month parameter making wrong output? echo date("Y-m-d", mktime(0, 0, 0, 09, 23, 2013));//output 2012-12-23 echo date("Y-m-d", mktime(0, 0, 0, 9, 23, 2013));//output 2013-09-23 From https://bugs.php.net/bug.php?id=55327 : Numbers with leading 0's are octal. 08 is an invalid value. See http://php.net/integer If you prefix a number with a leading 0 , it marks the number as Octal . The octal numeral system uses the digits 0 to 7. So, 08 and 09 doesn't exist and are invalid. The second statement is correct, and that's the correct method: echo date("Y-m-d", mktime(0, 0, 0