A nice day out

[Paul Lautman]

I was trying to use the following formula to add a number of weeks to a
date, where $b is the number of weeks.
date('Y-m-d', strtotime($Expi ry_Date)+$b*864 00*7)
However sometimes it added one day less than it should have done.
$Expiry_Date was always a Saturday and sometimes the answer was a Saturday
and sometimes the previous Friday.

Has anyone any idea why?

TIA
Regards
Paul

[Andy Jeffries]

Re: A nice day out

On Wed, 03 May 2006 11:32:58 +0100, Paul Lautman wrote:
[color=blue]
> I was trying to use the following formula to add a number of weeks to a
> date, where $b is the number of weeks. date('Y-m-d',
> strtotime($Expi ry_Date)+$b*864 00*7) However sometimes it added one day
> less than it should have done. $Expiry_Date was always a Saturday and
> sometimes the answer was a Saturday and sometimes the previous Friday.
>
> Has anyone any idea why?[/color]

No idea, but why not use two strtotime calls:

strtotime("+$b weeks", strtotime($Expi ry_Date));

That would be a better native way of handling it (and more readable)

Cheers,


Andy


--
Andy Jeffries MBCS CITP ZCE | gPHPEdit Lead Developer
http://www.gphpedit.org | PHP editor for Gnome 2
http://www.andyjeffries.co.uk | Personal site and photos

[Paul Lautman]

Re: A nice day out

Andy Jeffries wrote:[color=blue]
> On Wed, 03 May 2006 11:32:58 +0100, Paul Lautman wrote:
>[color=green]
>> I was trying to use the following formula to add a number of weeks
>> to a date, where $b is the number of weeks. date('Y-m-d',
>> strtotime($Expi ry_Date)+$b*864 00*7) However sometimes it added one
>> day less than it should have done. $Expiry_Date was always a
>> Saturday and sometimes the answer was a Saturday and sometimes the
>> previous Friday.
>>
>> Has anyone any idea why?[/color]
>
> No idea, but why not use two strtotime calls:
>
> strtotime("+$b weeks", strtotime($Expi ry_Date));
>
> That would be a better native way of handling it (and more readable)
>
> Cheers,
>
>
> Andy[/color]

Nice one. I didn't think of that. Still like to know why the other one was
so wierd.

[Andy Jeffries]

Re: A nice day out

On Wed, 03 May 2006 13:05:25 +0100, Paul Lautman wrote:[color=blue][color=green][color=darkred]
>>> I was trying to use the following formula to add a number of weeks to a
>>> date, where $b is the number of weeks. date('Y-m-d',
>>> strtotime($Expi ry_Date)+$b*864 00*7) However sometimes it added one day
>>> less than it should have done. $Expiry_Date was always a Saturday and
>>> sometimes the answer was a Saturday and sometimes the previous Friday.
>>>
>>> Has anyone any idea why?[/color]
>>
>> No idea, but why not use two strtotime calls:
>>
>> strtotime("+$b weeks", strtotime($Expi ry_Date));
>>
>> That would be a better native way of handling it (and more readable)[/color]
>
> Nice one. I didn't think of that. Still like to know why the other one was
> so wierd.[/color]

No idea.... I tend not to get hung up on problems when I've found a
solution though, life's too short ;-)

Cheers,


Andy


--
Andy Jeffries MBCS CITP ZCE | gPHPEdit Lead Developer
http://www.gphpedit.org | PHP editor for Gnome 2
http://www.andyjeffries.co.uk | Personal site and photos

[erik.f.boberg@gmail.com]

Re: A nice day out

It is probably due to one day every year being 25 hours in php. its a
day in october i think and the reason is related to daylight savings
time i think. I had the same problem while making a calendar for my
homepage a while ago.

Andy Jeffries skrev:
[color=blue]
> On Wed, 03 May 2006 13:05:25 +0100, Paul Lautman wrote:[color=green][color=darkred]
> >>> I was trying to use the following formula to add a number of weeks to a
> >>> date, where $b is the number of weeks. date('Y-m-d',
> >>> strtotime($Expi ry_Date)+$b*864 00*7) However sometimes it added one day
> >>> less than it should have done. $Expiry_Date was always a Saturday and
> >>> sometimes the answer was a Saturday and sometimes the previous Friday.
> >>>
> >>> Has anyone any idea why?
> >>
> >> No idea, but why not use two strtotime calls:
> >>
> >> strtotime("+$b weeks", strtotime($Expi ry_Date));
> >>
> >> That would be a better native way of handling it (and more readable)[/color]
> >
> > Nice one. I didn't think of that. Still like to know why the other one was
> > so wierd.[/color]
>
> No idea.... I tend not to get hung up on problems when I've found a
> solution though, life's too short ;-)
>
> Cheers,
>
>
> Andy
>
>
> --
> Andy Jeffries MBCS CITP ZCE | gPHPEdit Lead Developer
> http://www.gphpedit.org | PHP editor for Gnome 2
> http://www.andyjeffries.co.uk | Personal site and photos[/color]

[Paul Lautman]

Re: A nice day out

Sounds likely. Is this documented anywhere?

erik.f.boberg@g mail.com wrote:[color=blue]
> It is probably due to one day every year being 25 hours in php. its a
> day in october i think and the reason is related to daylight savings
> time i think. I had the same problem while making a calendar for my
> homepage a while ago.
>
> Andy Jeffries skrev:
>[color=green]
>> On Wed, 03 May 2006 13:05:25 +0100, Paul Lautman wrote:[color=darkred]
>>>>> I was trying to use the following formula to add a number of
>>>>> weeks to a date, where $b is the number of weeks. date('Y-m-d',
>>>>> strtotime($Expi ry_Date)+$b*864 00*7) However sometimes it added
>>>>> one day less than it should have done. $Expiry_Date was always a
>>>>> Saturday and sometimes the answer was a Saturday and sometimes
>>>>> the previous Friday.
>>>>>
>>>>> Has anyone any idea why?
>>>>
>>>> No idea, but why not use two strtotime calls:
>>>>
>>>> strtotime("+$b weeks", strtotime($Expi ry_Date));
>>>>
>>>> That would be a better native way of handling it (and more
>>>> readable)
>>>
>>> Nice one. I didn't think of that. Still like to know why the other
>>> one was so wierd.[/color]
>>
>> No idea.... I tend not to get hung up on problems when I've found a
>> solution though, life's too short ;-)
>>
>> Cheers,
>>
>>
>> Andy
>>
>>
>> --
>> Andy Jeffries MBCS CITP ZCE | gPHPEdit Lead Developer
>> http://www.gphpedit.org | PHP editor for Gnome 2
>> http://www.andyjeffries.co.uk | Personal site and photos[/color][/color]

[Jerry Stuckle]

Re: A nice day out

Paul Lautman wrote:[color=blue]
> Sounds likely. Is this documented anywhere?
>
> erik.f.boberg@g mail.com wrote:
>[color=green]
>>It is probably due to one day every year being 25 hours in php. its a
>>day in october i think and the reason is related to daylight savings
>>time i think. I had the same problem while making a calendar for my
>>homepage a while ago.
>>
>>Andy Jeffries skrev:
>>
>>[color=darkred]
>>>On Wed, 03 May 2006 13:05:25 +0100, Paul Lautman wrote:
>>>
>>>>>>I was trying to use the following formula to add a number of
>>>>>>weeks to a date, where $b is the number of weeks. date('Y-m-d',
>>>>>>strtotime ($Expiry_Date)+ $b*86400*7) However sometimes it added
>>>>>>one day less than it should have done. $Expiry_Date was always a
>>>>>>Saturda y and sometimes the answer was a Saturday and sometimes
>>>>>>the previous Friday.
>>>>>>
>>>>>>Has anyone any idea why?
>>>>>
>>>>>No idea, but why not use two strtotime calls:
>>>>>
>>>>>strtotime( "+$b weeks", strtotime($Expi ry_Date));
>>>>>
>>>>>That would be a better native way of handling it (and more
>>>>>readable )
>>>>
>>>>Nice one. I didn't think of that. Still like to know why the other
>>>>one was so wierd.
>>>
>>>No idea.... I tend not to get hung up on problems when I've found a
>>>solution though, life's too short ;-)
>>>
>>>Cheers,
>>>
>>>
>>>Andy
>>>
>>>
>>>--
>>>Andy Jeffries MBCS CITP ZCE | gPHPEdit Lead Developer
>>>http://www.gphpedit.org | PHP editor for Gnome 2
>>>http://www.andyjeffries.co.uk | Personal site and photos[/color][/color]
>
>
>
>[/color]

Yep, it's called Daylight Savings Time in the United States. Last Sunday in
October at 2AM clocks are set back to 1AM.

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===