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QAIX > PHP web-programming > PHP ImageCreateFrom.. malfunctioning in last PHP releases... 9 May 2008 11:26:26
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PHP ImageCreateFrom.. malfunctioning in last PHP releases...

M 9 May 2008 11:26:26
 Hello people,

I use ImageCreateFromStri­ng PHP functions to resize (thumbnails and so)
dynamically my JPG images.

I use third party WEB hosting provider , so I have no control about new
releases and updates of server softwares.

I have not changed my images in last 3 years (they are used for virtual
stores), they appeared beautiful in these 3 years, but from some days
ago, they are appearing with terrible filter colors (all blue for
instance, some entirely black and so). When bypassing image PHP
functions, images again appear beautiful in my page, but site
performance to show product catalogs gets terrible, not to say
impossible for customers browse on it.

I wrote web provider to check what changed in their PHP environment, but
I am afraid they will answer none has changed.

I use the following sequence of commands to rebuild thumb images:

$orimage = ImageCreateFromStri­ng(string) to get original image
from opened JPG file
$thumb = ImageCreate(new-wid­th, new-height) to create empty new
thumbnail
ImageCopyResized($t­humb,$origame,....) to fill thumbnail
ImageJpeg($thumb) to show thumbnail

I checked by increasing 'quality' parameter ImageJpeg($thumb,''­,100)
but result continue to be wrong.

Is anobody else experiencing these problems lately?, how did you solve
it?

Thanks very much

(I would appreciate cc to meu@meucat.com if possible)

Mig

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OptionsAdd comment
Richard Lynch 13 June 2005 06:45:12 [ permanent link ]
 On Sun, June 12, 2005 7:37 pm, M said:
I use ImageCreateFromStri­ng PHP functions to resize (thumbnails and so)
dynamically my JPG images.
I use third party WEB hosting provider , so I have no control about new
releases and updates of server softwares.
I have not changed my images in last 3 years (they are used for virtual
stores), they appeared beautiful in these 3 years, but from some days
ago, they are appearing with terrible filter colors (all blue for
instance, some entirely black and so). When bypassing image PHP
functions, images again appear beautiful in my page, but site
performance to show product catalogs gets terrible, not to say
impossible for customers browse on it.
I wrote web provider to check what changed in their PHP environment, but
I am afraid they will answer none has changed.
I use the following sequence of commands to rebuild thumb images:
$orimage = ImageCreateFromStri­ng(string) to get original image
from opened JPG file
$thumb = ImageCreate(new-wid­th, new-height) to create empty new
thumbnail


Make this one be ImageCreateTrueColo­r()
http://php.net/imag­ecreatetruecolor
ImageCopyResized($t­humb,$origame,....) to fill thumbnail
ImageJpeg($thumb) to show thumbnail
I checked by increasing 'quality' parameter ImageJpeg($thumb,''­,100)
but result continue to be wrong.
Is anobody else experiencing these problems lately?, how did you solve
it?


I believe something changed in the GD library where lo-res internal images
were not promoted to hi-res or something like that...

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QAIX > PHP web-programming > PHP ImageCreateFrom.. malfunctioning in last PHP releases... 9 May 2008 11:26:26
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