RE: [PHP] [Q] Converting SQL Datetimes to timestamps
Try reversing the order in the date to -mm-dd and I believe it should work. Keep in mind that the time variable $ts is not the same as a Mysql timestamp for example. It conforms to the unix epoch time variable. Warren Vail -Original Message- From: news [mailto:[EMAIL PROTECTED] On Behalf Of Michael T. Peterson Sent: Tuesday, August 03, 2004 11:05 AM To: [EMAIL PROTECTED] Subject: [PHP] [Q] Converting SQL Datetimes to timestamps Evidently the strtotime() function will not convert an SQL datetime to a timestamp. Am I missing something? Here's an example of what I mean: $sql_datetime = '1948-30-03 01:30:00'; $ts = strtotime( $sql_datetime ); print( $ts.'br'); When this script is executed, strtotime() returns -1. If true, that strtotime() is unable to convert SQL datetimes into timestamps, how are others accomplishing this? Cheers, Michael -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] [Q] Converting SQL Datetimes to timestamps
Evidently the strtotime() function will not convert an SQL datetime to a timestamp. Am I missing something? Here's an example of what I mean: $sql_datetime = '1948-30-03 01:30:00'; $ts = strtotime( $sql_datetime ); print( $ts.'br'); When this script is executed, strtotime() returns -1. If true, that strtotime() is unable to convert SQL datetimes into timestamps, how are others accomplishing this? Cheers, Michael From http://us4.php.net/manual/en/function.strtotime.php a user comments about this: cryogen at mac dot com 06-Apr-2004 09:39 I neglected to include the solution in my last post for using strtotime() with date-time data stored in GMT. Append the string GMT to all of your datetimes pulled from MySQL or other database that store date-times in the format -mm-dd hh:ii:ss just prior to converting them to a unix timestamp with strtotime(). This will ensure you get a valid GMT result for times during daylight savings. EXAMPLE: ?php $date_time1 = strtotime(2004-04-04 02:00:00); // returns bad value -1 due to DST $date_time2 = strtotime(2004-04-04 02:00:00 GMT); // works great! ? -- --Matthew Sims --http://killermookie.org -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] [Q] Converting SQL Datetimes to timestamps
On Wednesday 04 August 2004 02:05, Michael T. Peterson wrote: Evidently the strtotime() function will not convert an SQL datetime to a timestamp. Am I missing something? Here's an example of what I mean: $sql_datetime = '1948-30-03 01:30:00'; $ts = strtotime( $sql_datetime ); print( $ts.'br'); When this script is executed, strtotime() returns -1. If true, that strtotime() is unable to convert SQL datetimes into timestamps, No it's not true, RTFM. how are others accomplishing this? If you're need to process a wider range of dates use the Julian day functions manual Calendar Functions -- Jason Wong - Gremlins Associates - www.gremlins.biz Open Source Software Systems Integrators * Web Design Hosting * Internet Intranet Applications Development * -- Search the list archives before you post http://marc.theaimsgroup.com/?l=php-general -- /* It takes two to tell the truth: one to speak and one to hear. */ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] [Q] Converting SQL Datetimes to timestamps
Michael T. Peterson wrote: Evidently the strtotime() function will not convert an SQL datetime to a timestamp. Am I missing something? Here's an example of what I mean: $sql_datetime = '1948-30-03 01:30:00'; $ts = strtotime( $sql_datetime ); print( $ts.'br'); When this script is executed, strtotime() returns -1. If true, that strtotime() is unable to convert SQL datetimes into timestamps, how are others accomplishing this? strtotime() will work, actually, but not for dates before 1970. If you want to convert a database timestamp to a Unix timestamp that's before 1970, you need to be on an OS that supports negative timestamps (not windows, as far as I know). -- John Holmes php|architect - The magazine for PHP professionals - http://www.phparch.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] [Q] Converting SQL Datetimes to timestamps
On Tuesday 03 August 2004 14:05, Michael T. Peterson offered up the following tid-bit of information : Evidently the strtotime() function will not convert an SQL datetime to a timestamp. Am I missing something? Here's an example of what I mean: $sql_datetime = '1948-30-03 01:30:00'; $ts = strtotime( $sql_datetime ); print( $ts.'br'); When this script is executed, strtotime() returns -1. If true, that strtotime() is unable to convert SQL datetimes into timestamps, how are others accomplishing this? Cheers, Michael It works with SQL datestampsjust not with that one above. The year (1948) will return a negative timestamp quote from http://us4.php.net/strtotime Note: The valid range of a timestamp is typically from Fri, 13 Dec 1901 20:45:54 GMT to Tue, 19 Jan 2038 03:14:07 GMT. (These are the dates that correspond to the minimum and maximum values for a 32-bit signed integer.) Additionally, not all platforms support negative timestamps, therefore your date range may be limited to no earlier than the Unix epoch. This means that e.g. dates prior to Jan 1, 1970 will not work on Windows, some Linux distributions, and a few other operating systems. /quote -- John C. Nichel berGeek KegWorks.com 716.856.9675 [EMAIL PROTECTED] -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] [Q] Converting SQL Datetimes to timestamps
Check out strtotime in the PHP manual. It gives a few examples of how to use the function that I think will answer your first question. Next, check out mktime, time, and date. -Original Message- From: news [mailto:[EMAIL PROTECTED] On Behalf Of Michael T. Peterson Sent: Tuesday, August 03, 2004 11:05 AM To: [EMAIL PROTECTED] Subject: [PHP] [Q] Converting SQL Datetimes to timestamps Evidently the strtotime() function will not convert an SQL datetime to a timestamp. Am I missing something? Here's an example of what I mean: $sql_datetime = '1948-30-03 01:30:00'; $ts = strtotime( $sql_datetime ); print( $ts.'br'); When this script is executed, strtotime() returns -1. If true, that strtotime() is unable to convert SQL datetimes into timestamps, how are others accomplishing this? Cheers, Michael -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
