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Bug #18779 Date("yz") returns wrong julian date
Submitted: 2002-08-07 08:16 UTC Modified: 2002-08-07 09:30 UTC
From: pdaugherty at cem dot va dot gov Assigned:
Status: Not a bug Package: Date/time related
PHP Version: 4.2.1 OS: Redhat Linux 7.3 Kernel 2.4.18-5
Private report: No CVE-ID: None
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 [2002-08-07 08:16 UTC] pdaugherty at cem dot va dot gov 
Date("yz") returns wrong julian date. 

For 8/7/02, php funcion 'date("yz")' returns 02218, which is wrong.  Php function 'date("d-M-Y") returns 07-Aug-2002, which is correct. The shell command "date +%j" returns the proper julian date of 219.

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 [2002-08-07 08:19 UTC] pdaugherty at cem dot va dot gov 
edit spelling
 [2002-08-07 09:12 UTC] georg@php.net 
The result from date("yz") is ok: y=02, and z=218. z is the day of the year from 0..365 (as described in the documentation).
 [2002-08-07 09:21 UTC] pdaugherty at cem dot va dot gov 
But the actual day of the year on August 7th 2002 is 219 not 218. The format is ok, but the date calculation is wrong.
 [2002-08-07 09:30 UTC] eru@php.net 
Which is totally correct, because the range of days is from 0 to 365. From the manual:
z - day of the year; i.e. "0" to "365"

date( "z", mktime( 0, 0, 0, 1, 1, 2002 ) );
 
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