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imagecreatefromstring - errort test never fails???

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I have used this as follows

$im=imagecreatefromstring($code);
if($im != FALSE)
         {
// resize what's in $code into a thumbnail for use in the database
         }
else
      // insert an arbitrary thumbnail that represents 'not actually an 
image at all'

HOWEVER
If it is a recognisable image, really good thumbnails are created
BUT
if it is NOT an image. the code never executes the 'else' clause and I 
just get errors like this

  PHP Warning:  imagecreatefromstring(): Data is not in a recognized format

in the logs. and three bytes of rubbish ( the string INF) in the 
thumbnail!! (INvalid Format? ??)


The manual clearly seems to state that imagecreatefromstring()  will 
return FALSE if it fails to ID a valid image. NOT spit out an error.

"Return Values

An image resource will be returned on success. *|FALSE|* is returned if 
the image type is unsupported, the data is not in a recognised format, 
or the image is corrupt and cannot be loaded."

I have tried !=FALSE and !== FALSE with no effect.

Is this a bug, or just me being dumb?

I cant believe it has gone unnoticed if its a bug surely?

-- 
Ineptocracy

(in-ep-toc’-ra-cy) – a system of government where the least capable to lead are elected by the least capable of producing, and where the members of society least likely to sustain themselves or succeed, are rewarded with goods and services paid for by the confiscated wealth of a diminishing number of producers.

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imagecreatefromstring - errort test never fails??? The Natural Philosopher <tnp@invalid.invalid> - 2013-08-06 22:02 +0100
  Re: imagecreatefromstring - errort test never fails??? The Natural Philosopher <tnp@invalid.invalid> - 2013-08-06 22:16 +0100

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