imagegif() function 1

[cLFlaVA]

hi all.

i'm creating a thumbnail creator, and i have two seperate sections of the code - one for jpegs and one for gifs.

after using imagecopyresampled, my last step is using imageJPEG and imageGIF depending on the image type.

as you know i'm about to say, this works fine with jpegs but i get the following error when I try to create the gif:

the image "..." cannot be displayed because it contains errors.

i then do a view source and i see this:

[tt]<br />
<b>Fatal error</b>: Call to undefined function: imagegif() in <b>/home/httpd/vhosts/.../httpdocs/item.php</b> on line <b>135</b><br />[/tt]

so, what does this mean? i'm confused as to why imageJPEG would be defined but imageGIF would not be...

thanks for your insight!



*cLFlaVA
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[sleipnir214]

That would be because GIF is a proprietary image format owned by the CompuServe corportation, so the GD library has not supported the manipulation of GIFs.

What version of GD are you using? GIF manipulation was reenabled in GD version 2.0.28





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[cLFlaVA]

bundled (2.0.12 compatible).

damn.



*cLFlaVA
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[sleipnir214]

I'm running PHP 5.1.6, which comes bundled with a version-2.0.28-compatible, GIF-enabled GD library.

Is upgrading an option?



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[cLFlaVA]

nah, unfortunately it's for a guy i'm working with that's running his own server - with php 4 something.

i've been researching this for a while - i managed to work around this using the following:

if ( $strFileType == "image/gif" ) == "gif" ) {
    exec(EscapeShellCmd("convert -geometry 125x125 -quality 75 " . $strFullFilePath . " " . $strFullFilePath ));
} else {
    exec(EscapeShellCmd("convert -geometry 125x125 -quality 75 jpg:" . $strFullFilePath . " jpg:" . $strFullFilePath ));
}

luckily i was able to utilize shell commands. is this an acceptable method? are there any issues with this you know of?


thanks sleip.



*cLFlaVA
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[URL unfurl="true"]http://www.coryarthus.com/[/url]

 

[sleipnir214]

That's an external use of ImageMagick, which is a common-enough workaround. I don't see any real problems.



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[cLFlaVA]

thanks for your help



*cLFlaVA
----------------------------
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[URL unfurl="true"]http://www.coryarthus.com/[/url]