s. I seldom use dB's to store images either, but on
occasion it is "preferable" and is certainly not "bad" practice to do
so, as Mark claims.
Cheers,
tedd
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the database was the easy way out, I started using the filesystem
cuz of both a limitation in a forum AND a few mails from you. But easier...
NO.
Børge:
I'm lost.
As a newbie, is storing an image in a dB a "good" thing or a "bad" thing?
tedd
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>> > At 10:01 AM -0500 3/1/07, markw@mohawksoft.com wrote:
tedd said:
>Well... it's not just me, but from what I've learned and read over the
> years.
>
> Your claim is that in ALL cases using a file system to store images
is preferable to using a database.
At 8:55 PM +0100 3/5/07, Børge Holen wrote:
This dude is just trying to start another skirmishand probably a riot.
Was there something I missed. :-)
tedd
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To
that after
the abstract creativity takes place, it is verified against the science.
All hogwash -- and not even well said.
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At 10:16 PM -0500 3/8/07, Rob Gould wrote:
I have to say this is the most helpful listserve I've ever joined!
Such friendly people and such good information.
What?!?
That's the first time I've heard that -- we're slipping guys. We've
got to stamp out that image befo
p.net/manual/en/function.date.php
tedd
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=> "Donnerstag"
,5 => "Freitag"
,6 => "Samstag"
);
return $wdays[$weekday];
}
$day = convert_from_weekday(0) // $day = "Sonntag"
Tijnema:
That's also a shorter version of a simple switch statement.
I haven't thought of, or seen
t, while it's shorter, it's still NOT advisable to use the shorter tags.
tedd
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them?
It sounds like characters out of an old Navy WWII "Don't go on
shore-leave without protection" film.
:-)
tedd
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At 3:25 PM +0100 3/11/07, Tijnema ! wrote:
On 3/11/07, tedd <<mailto:[EMAIL PROTECTED]>[EMAIL PROTECTED]> wrote:
At 5:28 PM +0100 3/7/07, <mailto:[EMAIL PROTECTED]>[EMAIL PROTECTED] wrote:
> PS: If you want your code to validate, change the & to & Add the
At 3:05 PM +0100 3/11/07, Tijnema ! wrote:
On 3/11/07, tedd <<mailto:[EMAIL PROTECTED]>[EMAIL PROTECTED]> wrote:
At 10:05 AM +0100 3/11/07, Tijnema ! wrote:
- You could define $wdays inside the function
function convert_from_weekday ($weekday) {
$wdays = array
(0 =>
At 12:02 PM -0500 3/11/07, Edward Vermillion wrote:
On Mar 11, 2007, at 10:02 AM, tedd wrote:
At 3:05 PM +0100 3/11/07, Tijnema ! wrote:
On 3/11/07, tedd <<mailto:[EMAIL PROTECTED]>[EMAIL PROTECTED]> wrote:
At 10:05 AM +0100 3/11/07, Tijnema ! wrote:
- You could define $wday
At 8:14 AM +0800 3/12/07, [EMAIL PROTECTED] wrote:
Dear All,
What different between 4 and 5 ?
Edward.
1
tedd
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ile
still has to be stored somewhere and be subject to whatever hard disk
schemes that storage device uses. So, the reported size will vary
regardless of where you store it. The only place where I see that
term as being relevant is in data transmission where the "absolute"
file siz
nt to place this at the top of your css files:
and then add this to your .htacces file:
SetHandler application/x-httpd-php
After that, you can set variables within your css files by echo() ?>
hth's
tedd
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What, are you crazy???!
That's going to melt-down the entire Internet!
:-) :-) :-)
Yeah, I remember similar comments about using a mouse -- hey, things change.
tedd
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be off-base here, (not a soundex example) but if a site search
is all your after, try this one:
http://sperling.com/examples/search/
Cheers,
tedd
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can i find one for free ?
thanks
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Alain:
You can choose -- php, flash, or javascript.
http://xn--nvg.com/calendar
Let me know which one you want.
tedd
ps: If you can't read the above url, get opera.
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ie as to the right
way to go about doing this?
Best,
Craig
Craig:
Simple.
Generate a "random unique ID" via whatever method you want. However,
before using, search your dB to see if it's already in use. If it is,
then generate another one and repeat.
Cheers,
tedd
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At 4:28 PM +0100 3/22/07, Németh Zoltán wrote:
2007. 03. 22, csütörtök keltezéssel 11.24-kor tedd ezt írta:
At 11:18 AM -0600 3/21/07, [EMAIL PROTECTED] wrote:
>Hello,
>I want to add a random unique ID to a Mysql table. Collisions
>are unlikely but possible so to handle those
At 4:53 PM +0100 3/22/07, Németh Zoltán wrote:
2007. 03. 22, csütörtök keltezéssel 11.42-kor tedd ezt írta:
> As for efficiency, that's probably not even worth mentioning in this case.
why not? you would use 2 sql queries while I would use one most of the
time and 2 in case of
At 9:15 AM +0100 3/23/07, Németh Zoltán wrote:
2007. 03. 22, csütörtök keltezéssel 12.58-kor tedd ezt írta:
At 4:53 PM +0100 3/22/07, Németh Zoltán wrote:
>2007. 03. 22, csütörtök keltezéssel 11.42-kor tedd ezt írta:
>
> > As for efficiency, that's probably not
even wo
;s a
trade-off that's not worth it.
Q: Do they teach this stuff in college now or are the teachers still
only measuring performance in myopic terms of saving memory and time?
Not a criticism, just a question.
Cheers,
tedd
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e: a) don't change you email
and continue receiving email thinking Nemeth is
your first name; b) or change your email address.
As us USA types are told, we all have to adapt to global conventions. :-)
Cheers,
tedd
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At 2:24 PM -0400 3/24/07, Robert Cummings wrote:
On Sat, 2007-03-24 at 10:21 -0400, tedd wrote:
At 7:47 PM -0500 3/23/07, Richard Lynch wrote:
>Folks:
>
>How often do you use a loop of any kind in PHP with enough iterations
>that this is even significant?
>
>Write t
n working
on an audio Captcha.
Cheers,
tedd
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from the database using the ID and compare it to the one
entered in the form.
Tijnema
What about an audio Captcha?
Your thoughts?
tedd
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At 10:49 AM -0400 3/25/07, Jake McHenry wrote:
Do I call the image creation file in an html
Jake
The audio is for visually impaired and unless their also deaf, they
have sound turned on.
tedd
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At 5:05 PM +0200 3/25/07, Dotan Cohen wrote:
On 25/03/07, tedd <[EMAIL PROTECTED]> wrote:
What about an audio Captcha?
Your thoughts?
tedd
I do a lot of my browsing at the university library. I can't have any
sound being made there each time I must enter a capcha. Don'
ss than 32768 if you're running
windows -- maybe that's the problem. But, I would look to my rand()
for an answer.
Cheers,
tedd
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meth is a family name - so I reversed it now
greets
Zoltán Németh
Hey Németh:
Good ! ;-)
tedd
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efresh the page and new values are shown because it's the tag that
causes the captcha.php script to run.
Don't mind the Audio Captcha there, I have a better one.
Cheers,
tedd
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At 3:59 PM +0100 3/26/07, Ross wrote:
Can I put post values directly into insert statements?
$query = "INSERT INTO categories (category_name) VALUES
('$_POST['cat_name'])";
Open to sql injection.
tedd
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it. Anything a
computer can put create, another computer can interpret. The
technology lag between one to the other is always only temporary and
therein lies some temporary relief.
Cheers,
tedd
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script can just use session_start() and get the secret key.
Yep, that's the way to do it.
Create a key at the start, place it in a session, call your Captcha
image maker via src, and display the image.
Cheers,
tedd
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At 12:54 PM +0100 3/27/07, Ford, Mike wrote:
On 24 March 2007 16:28, tedd wrote:
> 2007. 03. 23, péntek keltezéssel 17.30-kor Dwayne Heronimo ezt írta:
> > YES this works thank nemeth:
>
> your welcome but please call me Zoltán ;)
> (my first name is Zoltán. in Hungary
these?
I'm easily confused anyway. If people want to
call me sperling instead of tedd (it's better
than other things I've been called) it doesn't
make any difference to me and I wasn't the one
complaining anyway.
If a US company wants to use
[EMAIL PROTECTED], then as we
code :)
I'm just about done with my Audio CAPTCHA and will be posting it in a
few minutes.
Would like to get your thoughts.
Cheers,
tedd
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is php in it, so I
guess it's on topic.
Cheers,
tedd
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nt at times and
can't always hear things the first time.
But like i said, personal preference :)
Just click the "Speak Key" again -- it will repeat the same key as
many times as you want.
http://sperling.com/examples/captcha/
If you want a new key, just refresh the page.
because when he returns to the site, the CAPTCHA would have
changed?
Can you explain how that works?
It's definitely an interesting field. I think using the common
sense techniques you (tedd) have used combined with a better CAPTCHA
method, you could actually create something fairly
that may not type as "slow" as we do. :-)
We didn't see your script yet, so i don't know what extra security you
added. But it's good to have these things in mind.
I plan on making the script public. I just need to stamp out these
types of fires first.
ll.. that's the point, namely to make it difficult. As I've said
before, anything a computer can generate another computer can
interpret -- it just takes time and effort.
Thanks for your review,
tedd
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any event, I think this may be a bit more difficult to crack than
something that replies upon javascript -- what do you think?
Cheers,
tedd
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r sighted users.
I think that what Steve suggest may have some merit. I need to think
of some examples.
Cheers,
tedd
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.php?page=default">about
Of should I stick to just static html :(
Dwayne
Dwayne:
I already did it, see this:
http://sperling.com/examples/smart-menu/
Cheers,
tedd
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re than we imagine.
Cheers,
tedd
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lot to do if anyone wants to hire
me for this type of research. I hate it when employers get something
worthwhile, think that's all there is, and then vanish without
investigating it further. There's so much more. Oh well, they have
the money and I don't.
Cheers,
tedd
-
IE 6. In fact, just consider
using *anything* but IE (IMO).
See below screen-shots:
http://www.browsercam.com/public.aspx?proj_id=336219
Everything that has a blue dot works AND everything except for IE 5.5
and IE 6 has a blue dot.
Cheers,
tedd
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At 3:48 PM -0400 3/30/07, Jason Pruim wrote:
On Mar 30, 2007, at 3:17 PM, tedd wrote:
At 12:54 PM -0400 3/30/07, <[EMAIL PROTECTED]> wrote:
Maybe I'm missing something.. if the intent is to have 'hidden'
fields that a user would end up submitting but a bot wouldn't.
nough off-topic chatter.
Thanks for all the review and comments.
Cheers,
tedd
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continents. The "current" range is less than 0x (65k), so I
don't think you would have problems limiting it to that figure.
Cheers,
tedd
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NLY able
vision users. Those with impaired vision or limited cognitive or
physical skills would be also blocked and therein lies the rub. Thus,
my continued work to find a solution as with my recent work on my
audio CAPTCHA, regardless of speech recognition techniques.
I just need a way for visi
asks for
it again.
But, in support of your claim, I think you are probably correct -- I
just don't know for sure.
Cheers,
tedd
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magine why Google would
have that on their site, so in that aspect, it got me.
Nice April fool joke. :-)
tedd
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ing php to generate a XMLHttprequest, but I am mixing languages, see:
http://xn--nvg.com/thickbox
If you can't read it, try it with a better browser.
Cheers,
tedd
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ge whereas imagecreatetruecolor()
returns a "black" page.
Q: Is there a problem with a "blank" page?
Cheers,
tedd
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At 4:27 PM +0100 4/2/07, Richard Davey wrote:
tedd wrote:
In the php manual it says:
imagecreate() returns an image identifier representing a blank
image of specified size.
We recommend the use of imagecreatetruecolor().
Q: Why the recommendation?
Because the need to create 256 colour
e be acceptable for the blog
owner to put up a color-blind CAPTCHA?
Interesting topics for discussion, but probable not for this list.
Thanks everyone.
Cheers,
tedd
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accessible to screen readers. It's not foolproof, but it appears to
work in that regard.
Interesting discussion -- thanks for your perspective.
Cheers,
tedd
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low the table to accommodate
the screen width OR force one line per field and expand the table
beyond the screen width.
Cheers,
tedd
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provided a solution, here's mine. What's left
over send to me. :-)
tedd
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ay to "show" them
to screen readers. In addition, even OS's make it hard for user to
even enter/use those type of characters (except for Mac of course).
There has to be some commonality -- any suggestions?
Cheers,
tedd
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recognition routines would have a lot of trouble
with these as my imagination and coding can change with much less
effort. It makes for an interesting problem.
Cheers,
tedd
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contribute to a blog for
example.
However, a spammer could do the same. But, if you pass all requesting
emails through a spam filter, like spamcop.net, then that should
reduce spam to an acceptable level.
Perhaps I don't fully understand the problem, but there are many
things here to
to it using my keyboard! :B
Cheers,
Rob.
Rob:
How do you do that?
Is there a php or javascript solution? I'm open to suggestion.
Cheers,
tedd
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To unsubs
ever, I don't see how adding javascript to move the mouse around
presents a security issue -- can anyone explain? As I see it,
server-side can still filter out what's input. In the end, it's
either right or not.
Cheers,
tedd
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be one, but that appears easy to crack.
Cheers,
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At 7:54 PM +0200 4/5/07, Tijnema ! wrote:
About your dot-captcha program tedd, it's another trick, it hasn't
been used yet, so somebody needs to look at it to crack. Like Jochem
said, if someone really wants to break it, he will do it. Making a
real though CAPTCHA isn't that har
o, but wouldn't work. The
"best" solution was to use text of the language to spell the language.
Cheers,
tedd
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ny other.
However, it would be a simple matter for spammy to download all the
keys from my site and use them thus defeating the whole idea, duh.
So, if I was to support this method, then each capatcha user would
have to come up with their own questions, which could be problematic
h would be the key. How would a bot read that?
Cheers,
tedd
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-- don't do it.
As with ALL programming problems -- start small, reduce all problems
into smaller problems that you can solve. Then assemble the small
solutions together after careful consideration of what you're trying
to do.
Cheers,
tedd
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that?
I had a good friend who said -- "A program is nothing more than three
steps: input; calculation; and display." I've always found that's a
good start.
tedd
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erspective to design patterns.
I'm one of those types that think nothing is impossible with the
right money and enough time.
Cheers,
tedd
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Google it. It's surprising how many examples you can
find to review as to how others implemented that small piece of code.
This is truly a resource that has never been there for programmers before.
Cheers,
tedd
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-
At 9:11 PM -0400 4/6/07, Robert Cummings wrote:
On Fri, 2007-04-06 at 20:44 -0400, Mike Shanley wrote:
> With POST, everything stays hidden, mostly untamperable, and
Bullshit. It is VERY easy to tamper with post data.
Please provide an example.
Cheers,
tedd
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At 11:56 PM +0100 4/6/07, Tijnema ! wrote:
On 4/6/07, tedd <[EMAIL PROTECTED]> wrote:
At 2:55 PM +0100 4/6/07, Tijnema ! wrote:
I know, but animated gifs are still quite easy to read with a bot.
Really?
What if I a created a box surrounded by letters, like so:
A B C
D E F
G H I
H
At 10:33 PM +0200 4/7/07, Tijnema ! wrote:
On 4/7/07, tedd <[EMAIL PROTECTED]> wrote:
At 11:56 PM +0100 4/6/07, Tijnema ! wrote:
On 4/6/07, tedd <[EMAIL PROTECTED]> wrote:
At 2:55 PM +0100 4/6/07, Tijnema ! wrote:
I know, but animated gifs are still quite easy to read with a b
d out a fix -- try it again. :-)
http://sperling.com/a/arrows/
A little knowledge is a dangerous thing.
Cheers,
tedd
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ess, there is something here that I don't understand
(which very well could be), I can't see how anyone, without massive
computer resources, could break that.
Am I wrong?
Cheers,
tedd
PS: I love these types of discussions
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At 12:38 AM +0100 4/8/07, Stut wrote:
tedd wrote:
Okay, I think I figured out a fix -- try it again. :-)
http://sperling.com/a/arrows/
A little knowledge is a dangerous thing.
Give up now, while you're still sane.
Think about what you're trying to do. You're trying
At 6:33 PM +0200 4/8/07, Tijnema ! wrote:
On 4/8/07, tedd <[EMAIL PROTECTED]> wrote:
Remember, I could also use a jpeg file and have millions of colors to
chose from. Unless, there is something here that I don't understand
(which very well could be), I can't see how anyone,
thing)
My attempt here was only to show that a MD5 solution could become so
vast that there would be no point in pursuing that avenue.
As for other ways to crack this, of course there ARE other easier ways.
Cheers,
tedd
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At 4:38 AM -0700 4/8/07, benifactor wrote:
hmm, why don't you md5 more then once..
I read somewhere that MD5'ing anything more than once, does not
increase security.
Cheers,
tedd
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At 1:21 AM -0700 4/9/07, Micky Hulse wrote:
Maybe use flash for this... harder to crack? (Of course, Flash will
open door to other problems.)
Sorry, coming in on this late. Good work Tedd! Very interesting.
M:
Tijnema showed how MD5 could be used to identify an image file and
crack my
At 8:49 AM -0400 4/9/07, Robert Cummings wrote:
On Mon, 2007-04-09 at 08:46 -0400, tedd wrote:
At 1:21 AM -0700 4/9/07, Micky Hulse wrote:
>Maybe use flash for this... harder to crack? (Of course, Flash will
>open door to other problems.)
>
>Sorry, coming in on this late. Go
At 9:58 AM -0400 4/9/07, Robert Cummings wrote:
On Mon, 2007-04-09 at 09:45 -0400, tedd wrote:
> >> However, this did make me wonder about the images that M$ and others
>> are using for captchas -- like find the kitty in a set of pictures.
>> The MD5 application coul
At 5:55 PM +0200 4/9/07, Tijnema ! wrote:
Cookies are old, so in the time they were introduced, today it is
possible to create and modify cookies with some good tools. These
tools are illegal,
I don't believe that.
FireFox probably has most, if not all.
Cheers,
tedd
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At 1:04 PM -0400 4/9/07, Robert Cummings wrote:
On Mon, 2007-04-09 at 12:51 -0400, tedd wrote:
>We were talking
> about M$'s "picture" captcha where they show pictures and ask a
question like "Pick the picture that shows a kitty" and NOT an "on
the fly&q
on I came to in this experiment.
Cheers,
tedd
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At 4:39 PM -0400 4/9/07, Robert Cummings wrote:
On Mon, 2007-04-09 at 22:27 +0200, Tijnema ! wrote:
> This is exactly what tedd did in his last arrow example. He edited the
header of the GIF image, and so that would result in different MD5.
Finding this part and skipping it in the
At 7:07 PM +0200 4/9/07, Tijnema ! wrote:
On 4/9/07, tedd <[EMAIL PROTECTED]> wrote:
At 5:55 PM +0200 4/9/07, Tijnema ! wrote:
>Cookies are old, so in the time they were introduced, today it is
possible to create and modify cookies with some good tools. These
>tools are illeg
WHERE Name = 'larry'";
$result = mysql_query($sql);
if ($result == "")
{
echo "No result found";
}
echo "Found";
Try NULL
Cheers,
tedd
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At 8:10 PM -0400 4/9/07, Robert Cummings wrote:
On Mon, 2007-04-09 at 17:14 -0400, tedd wrote:
At 4:39 PM -0400 4/9/07, Robert Cummings wrote:
>On Mon, 2007-04-09 at 22:27 +0200, Tijnema ! wrote:
>
> > This is exactly what tedd did in his last arrow example. He edited the
&
At 10:46 PM +0100 4/9/07, Tijnema ! wrote:
On 4/9/07, tedd <[EMAIL PROTECTED]> wrote:
It doesn't need to be complicated, just random placed pixels on the
image from a selection of colors would provide millions of
permutations.
Cheers,
tedd
But then OCR would still work, as wh
server and are as secure as the server
environment. If someone breaches the server environment, then all
data could exposed and is an excellent reason why not to store highly
sensitive data there.
Cheers,
tedd
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ill eventually have it on my site
as a style of visual captcha and will have this
audio version as well:
http://sperling.com/examples/captcha/index.php
My intent is to provide several different types of captchas for public use.
Cheers,
tedd
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reason why you need to
alter a significant portion of the image so that smaller portions
will probably contain some alteration.
Thanks for explaining that.
tedd
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