NYCPHP Meetup

[Dan Cech]

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
>>>
>>> _______________________________________________
>>> talk mailing list
>>> talk at lists.nyphp.org
>>> http://lists.nyphp.org/mailman/listinfo/talk
>>>
>>
>>
>> _______________________________________________
>> talk mailing list
>> talk at lists.nyphp.org
>> http://lists.nyphp.org/mailman/listinfo/talk
>>
> 
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