Re: PHP 4.0 Bug #8553: mktime() report inconsistent

Congratulations, you have discovered daylight savings time On 4 Jan 2001 gherson@snet.net wrote: > From: gherson@snet.net > Operating system: Linux RedHat 6.2 > PHP version: 4.0.4 > PHP Bug Type: Date/time related > Bug description: mktime() report inconsistent > > Hi. As the below script will show, I sometimes need to add an hour to mktime()'s > calculations to make its output consistent with other mktime() output. In the below loop that tests > 400 days, the hour offset is needed for days 87 - 296. > > $msg = <<<EOM > 1. Determination of an exp date's number of days from 1/1/2001. <br> > Algorithm: (exp date's timestamp - 1/1/2001's timestamp) / # of seconds in a > day.<br><br> > 3. Determination of today's number of days from 1/1/2001.<br> > Algorithm: (today's timestamp - 1/1/2001's timestamp) / # of seconds in a > day.<br> > EOM; > echo $msg; > > // When houroffsetof1=1 and houroffsetof3=0 for mi[days]=1-400, problems occur > // from 1-86 and 297-400. > $houroffsetof1=0; > $houroffsetof3=0; > for ($i=1; $i<=4; $i++) { > $lastproblem=-99; > $forlimit=400; > echo "Testing from 1 to $forlimit with houroffsetof1=$houroffsetof1 and > houroffsetof3=$houroffsetof3:<br>"; > #***FOR > for ($mi['days']=1; $mi['days']<=$forlimit; $mi['days']++) { > #***FOR > > # 1. > $expTStamp = > mktime(date("G")+$houroffsetof1,date("i"),date("s"),date("m"),date("d")+$mi['days'],date("y")); > $exp_daysFrom2001 = ($expTStamp - 978325200) / 86400; > > # 2. (Currently unused 1/4/01) > $test = mktime(1,0,0,1,1+$mi['days'],2001); > $exponly_daysFrom2001 = ($test - 978325200) / 86400; > #echo "2. exponly_daysFrom2001=$exponly_daysFrom2001 Should equal > mi['days'].<br>"; > > # 3. > $test = > mktime(date("G")+$houroffsetof3,date("i"),date("s"),date("m"),date("d"),date("y")); > $today_daysFrom2001 = ($test - 978325200) / 86400; > > if ($exp_daysFrom2001 != ($mi['days'] + $today_daysFrom2001)) { > if ($lastproblem +1 == ($mi['days']) ) { > echo " and at {$mi['days']}"; > } else { > echo "<br>"; > echo "lastproblem=$lastproblem<br>"; > echo "1 != (mi[days] + 3) mismatch problem at > mi['days']={$mi['days']}<br>"; > echo "1. exp_daysFrom2001=$exp_daysFrom2001<br>"; > echo "3. today_daysFrom2001=$today_daysFrom2001<br>"; > } // end if last iteration was problem. > $lastproblem = $mi['days']; > } // end if problem > } //end for 1 - mi[days] > echo "<br><br>"; > if ($houroffsetof1==0) { > $houroffsetof1 = 1; > } elseif ($houroffsetof3==0) { > if ($houroffsetof1==1) { > $houroffsetof1--; > } else { > $houroffsetof1 = 1; > } > $houroffsetof3 = 1; > } // end if $houroffset > } //end for i=1-4 > > > phpinfo() reports my configure line as: > './configure' '--with-cybercash=/home/httpd/html/paysmartnet-16/mck-cgi' > '--with-pgsql=/var/lib/pgsql' '--with-apxs', which is correct except for > the cybercash directory. (No, i didn't move it after the configure or the compile, which i did > as carefully as i could. I don't know why phpinfo has it wrong, except that an old configure > did reference that directory once. I did remember to delete the config.cache between configures.) > > I don't think my php.ini is relevant due to my light customization. > > My setup is not unusual in any way i know of. Pentium II, 350Mhz, 128MB ram. > > I didn't configure with --enable-debug, so I can't offer a gdb backtrace, sorry. > > Thank you, > George Herson > Pls feel free to call me 8am - 11pm EST: 203-324-4981 > > > -- > Edit Bug report at: http://bugs.php.net/?id=8553&edit=1 > > > > -- > PHP Development Mailing List <http://www.php.net/> > To unsubscribe, e-mail: php-dev-unsubscribe@lists.php.net > For additional commands, e-mail: php-dev-help@lists.php.net > To contact the list administrators, e-mail: php-list-admin@lists.php.net >