[nycphp-talk] GD Lib problem?
Jeff Siegel
jsiegel1 at optonline.net
Fri Mar 12 12:19:23 EST 2004
That's a good idea. I'm going to see if the ISP can do something
concerning the GD lib before I go down this road.
Jeff
--------
Dan Cech wrote:
> Jeff Siegel wrote:
>
>> I thought of that but then it would seem to kinda defeat the purpose
>> of a captcha since one could write some simple script to just read the
>> html and figure out the sequence of numbers/letters based on the
>> filenames.
>
>
> I think the intent was to use the imagecopy function to build your basic
> text string out of pre-made png images, then apply whatever obfuscation
> technique to the resulting montage, and output a single image.
>
> It could work quite well, especially if you had a large pool of pre-made
> letters to draw from.
>
> Dan
>
>> Another thought was to have these files in some non-doc root directory
>> and then copy them - using randomly generated new names - as needed
>> and then removing them when no longer needed...but I'm not nuts over
>> that idea.
>>
>> In the interim, I'm using the GD lib's built-in bitmap fonts...not
>> great looking but okay for now.
>>
>> Jeff
>> ------------
>>
>> bpang at bpang.com wrote:
>>
>>> create individual images of each char and then string those together?
>>>
>>> A.png
>>> B.png
>>> C.png
>>> etc...
>>>
>>>
>>>
>>>> I'm trying to create Captchas and it seems the hosting company does not
>>>> have Freetype support enabled. The following comes from the phpinfo
>>>> function:
>>>>
>>>> PHP 4.3.2 on FreeBSD
>>>>
>>>> GD Support enabled
>>>> GD Version bundled (2.0.15 compatible)
>>>> GIF Read Support enabled
>>>> JPG Support enabled
>>>> PNG Support enabled
>>>> WBMP Support enabled
>>>> XBM Support enabled
>>>>
>>>> Just wondering what kind of workaround there might be...or if there
>>>> isn't any.
>>>>
>>>> Jeff Siegel
>>>>
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>>>
>>>
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