Re: [PHP] findin colors in gif files
hi what gif is getting corrupted?, it works ok with the one you gave. To see what all those flag things are have a look at the gif spec at http://www.goice.co.jp/member/mo/formats/gif.html unpack puts the binary string into an array, flag gives some info as to the colour index table Tom At 09:43 PM 5/06/2002, freestylez wrote: >it almost works :) unfortunatly the gif file seems to be corrupted at some >point, >but anyhow - i am not good in these hex and bin things, could you explain me >the lines >that are dealing with hex conversino, flag, unpack this stuff? or do you >have a good link >explaining this? > >would be great! thanks! -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] findin colors in gif files
HI Just a thought, if your on a windows box you will need to ad a 'b' to the fiopen function like fopen($file, "br") Tom At 09:43 PM 5/06/2002, freestylez wrote: >it almost works :) unfortunatly the gif file seems to be corrupted at some >point, >but anyhow - i am not good in these hex and bin things, could you explain me >the lines >that are dealing with hex conversino, flag, unpack this stuff? or do you >have a good link >explaining this? > >would be great! thanks! -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] findin colors in gif files
Hi
I think you have to use fread to load the binary file, here is a quick
function that will do what you want. It a little bit safer than just
blindly changing hex values in the file, it only checks the colour table.
Tom
";
$gif[$x] = $r2;
$gif[$x+1] = $g2;
$gif[$x+2] = $b2;
$found = 1;
endif;
$x +=3;
endwhile;
endif;
endif;
if($found == 1):
while(list($key,$val)=each($gif)):
$newgif .= pack("C",$val);
endwhile;
$fd = fopen("test.gif", "w");
fwrite($fd,$newgif);
fclose($fd);
endif;
}
$filename = "vcd_1.gif";
change($filename,0xff,0x33,0x66,0x33,0x45,0xff);
?>
At 05:06 PM 5/06/2002, johannes reichardt wrote:
>hi everybody, i am new to this list & php
>and i have a big question that i would love to be answered ;)
>
>i have a small gif file that has a part in #ff3366 colored - so what i
>thought
>is to do a mean hack for my website: instead of opening all images in a
>graphicseditor and change the
>color manually i could look up for that color (ff3366) in the image files
>and replace it with something else, unfortunatly
>i got stuck with this approach pretty soon. here is my problem:
>
>if i open the gif file in php (its attached to this mail) and convert it to
>hex:
>
>$filetext1 = implode("",(@file("vcd_1.gif")));
>$filetext1 = bin2hex($filetext1);
> }
>
>like this i get a string that looks like hex - but i cant find my ff3366
>anymore,
>did i miss something really obvious?
>
>if i look up the gif file with an hexeditor (i use textpad) i can see it -
>with php
>its not findable
>
>any ideas?
>
>
>
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Re: [PHP] findin colors in gif files
hi
you will need to find the hex values for each individual number which i
think should be (without the hash)
76763636
Tom
At 05:06 PM 5/06/2002, johannes reichardt wrote:
>hi everybody, i am new to this list & php
>and i have a big question that i would love to be answered ;)
>
>i have a small gif file that has a part in #ff3366 colored - so what i
>thought
>is to do a mean hack for my website: instead of opening all images in a
>graphicseditor and change the
>color manually i could look up for that color (ff3366) in the image files
>and replace it with something else, unfortunatly
>i got stuck with this approach pretty soon. here is my problem:
>
>if i open the gif file in php (its attached to this mail) and convert it to
>hex:
>
>$filetext1 = implode("",(@file("vcd_1.gif")));
>$filetext1 = bin2hex($filetext1);
> }
>
>like this i get a string that looks like hex - but i cant find my ff3366
>anymore,
>did i miss something really obvious?
>
>if i look up the gif file with an hexeditor (i use textpad) i can see it -
>with php
>its not findable
>
>any ideas?
>
>
>
>--
>PHP General Mailing List (http://www.php.net/)
>To unsubscribe, visit: http://www.php.net/unsub.php
--
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To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] findin colors in gif files
hi everybody, i am new to this list & php
and i have a big question that i would love to be answered ;)
i have a small gif file that has a part in #ff3366 colored - so what i
thought
is to do a mean hack for my website: instead of opening all images in a
graphicseditor and change the
color manually i could look up for that color (ff3366) in the image files
and replace it with something else, unfortunatly
i got stuck with this approach pretty soon. here is my problem:
if i open the gif file in php (its attached to this mail) and convert it to
hex:
$filetext1 = implode("",(@file("vcd_1.gif")));
$filetext1 = bin2hex($filetext1);
}
like this i get a string that looks like hex - but i cant find my ff3366
anymore,
did i miss something really obvious?
if i look up the gif file with an hexeditor (i use textpad) i can see it -
with php
its not findable
any ideas?
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
