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Posted by comp.lang.php on 08/04/06 22:12
Andy Hassall wrote:
> On 4 Aug 2006 14:44:18 -0700, "comp.lang.php" <phillip.s.powell@gmail.com>
> wrote:
>
> >Actually I was wrong and found out the problem isn't
> >imagecreatetruecolor() but it happens to be imagecreatefromjpeg(),
> >again, only with certain JPEG images. There is nothing I could find
> >that distinguished one JPEG from another; they're all roughly the same
> >size, compression, having the same permissions, group and onwership,
> >all the same amount of color, all from the same CD source.
> >
> >I thought it was exceeding of memory_limit, however, using
> >memory_get_usage() I am finding the memory allotted for use in the
> >script is far below memory_limit, however, it still "dies".
>
> If imagecreatefromjpeg() is exhausting the memory you're not going to be able
> to see it from memory_get_usage(); you'll be below the limit before the call,
> and it'll die during the call - you won't be able to see it exceeding the limit
> apart from the error message (you have turned error_reporting back up to E_ALL,
> right?)
Yes, to no avail. It still forces you to download "index.php". There
is no error, no warning, nothing. PHP doesn't register any kind of
message whatseover; in fact, it sounds more like a segfault, in short,
*there is no PHP anymore*
>
> And next:
>
> (1) What _is_ output by the script when it fails?
>
Nothing. You're forced to download index.php
> (2) Can you reduce it to a _minimal_ test script - sounds like it could go all
> the way down to imagecreatefromjpeg() followed by imagejpeg() ?
>
It doesn't. It dies right at imagecreatefromjpeg() every time. Never
gets any further than that.
> (3) If you still can't work it out from there can you make available to the
> group examples of (a) an image that fails and (b) a similar one that doesn't
> fail?
>
I don't have an immediate way of producing them publically; they're on
a government-protected server that's not open to the general public; I
would have to attach them here, which I don't think Google Groups
allows to do.
> --
> Andy Hassall :: andy@andyh.co.uk :: http://www.andyh.co.uk
> http://www.andyhsoftware.co.uk/space :: disk and FTP usage analysis tool
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