Re: include vs require
| From: | Rasmus Lerdorf | Date: | Thu, 01 Jan 1970 00:00:00 +0000 |
| Subject: | Re: include vs require | ||
| References: | 1 | Groups: | php.pear.dev |
| Request: | Send a blank email to pear-dev+get-13702@lists.php.net to get a copy of this message | ||
I didn't say the overhead was huge, just that it was there. ;)
And it is measurable.
-Rasmus
On Sun, 23 Feb 2003, George Schlossnagle wrote:
> Yeah... besides the hash table lookup, what exactly is the overhead?
> They both end up calling zend_fopen, which is the 'expense' of the
> vacuous call. Am I missing something significant? The overhead seems
> miniscule (it doesn't look like any additional system calls should be
> made, just some O(1) userspace stuff.)
>
> George
>
> On Sunday, February 23, 2003, at 05:19 PM, Tim Thorpe wrote:
>
> > I'm not trying to start another IT[X] flamewar here. I'm just pointing
> > out that as PEAR grows, the probability of two simultaneously used
> > libraries having a common dependency increases. A minor sacrifice to
> > overhead seems a worthy cause if it will prevent (even small) headaches
> > down the road. *don't flame me* :)
> >
> > -----Original Message-----
> > From: Rasmus Lerdorf [mailto:rasmus@lerdorf.com]
> > Sent: Sunday, February 23, 2003 3:51 PM
> > To: Tim Thorpe
> > Cc: pear-dev@lists.php.net
> > Subject: RE: [PEAR-DEV] include vs require
> >
> >
> > On Sun, 23 Feb 2003, Tim Thorpe wrote:
> >
> >> It was my understanding that require_once was made part of the PEAR
> >> coding standard to prevent files from being re-included when
> >> dependencies got hairy.
> >
> > Correct. But if the dependencies are not hairy, then it is pure
> > overhead.
> >
> > -Rasmus
> >
> >
> >
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> >
>
>
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