March 27, 2013
strftime gets wrong date
Question by crnm
I’m using strftime to display future date.
But while using
strftime('%a., %d. %B %Y',time()+60*60*24*4)
I’m getting Mo., 01. April 2013 instead of Su., 31. March 2013 while using this today.
(Unix timestamp is 1364423120)
strftime('%a., %d. %B %Y',time()+60*60*24*3)
displays the correct Sa., 30. March 2013
What is wrong here with the last day of March?
Answer by Terje D.
The timestamp represents 23:25:20 local time. As daylight savings time comes into effect on March 31th, adding 96 h will give 00:25:20 as local time, thus a date one day later than expected. Using gmstrftime instead of strftime avoids this problem.
<?php
$timestamp = 1364423120;
echo strftime('%a., %d. %B %Y (%c %Z)', $timestamp)."n";
echo strftime('%a., %d. %B %Y (%c %Z)', $timestamp +60*60*24*4)."n";
echo gmstrftime('%a., %d. %B %Y (%c %Z)', $timestamp)."n";
echo gmstrftime('%a., %d. %B %Y (%c %Z)', $timestamp +60*60*24*4)."n";
gives
Wed., 27. March 2013 (Wed Mar 27 23:25:20 2013 CET)
Mon., 01. April 2013 (Mon Apr 1 00:25:20 2013 CEST)
Wed., 27. March 2013 (Wed Mar 27 22:25:20 2013 GMT)
Sun., 31. March 2013 (Sun Mar 31 22:25:20 2013 GMT)
Answer by Starx
According to the manual
strftime — Format a local time/date according to locale settings
Its better if you specify a locale while you are using it, to avoid such problem.
setlocale(LC_TIME, "de_DE");
strftime('%a., %d. %B %Y',time()+60*60*24*4)
