Captcha image Text Size

[Twayne]

Hi,

Learning PHP code; playing with various methods of generating captcha
codes:

In the code below, how would I change the size of the text displayed in
the captcha code?
Is it even possible with this method?
TIA,
Twayne

--------------------------
<?php

session_start() ;

$width = 120;

$height = 40;

$length = 5;

$baseList = '23456789abcdfg hjkmnpqrstvwxyz ABCDEFGHIJKLMNP QRSTUVWXYZ';

$code = "";

$counter = 0;

$image = @imagecreate($w idth, $height) or die('Cannot initialize GD!');

for( $i=0; $i<10; $i++ ) {

imageline($imag e,

mt_rand(0,$widt h), mt_rand(0,$heig ht),

mt_rand(0,$widt h), mt_rand(0,$heig ht),

imagecoloralloc ate($image, mt_rand(150,255 ),

mt_rand(150,255 ),

mt_rand(150,255 )));

}

for( $i=0, $x=0; $i<$length; $i++ ) {

$actChar = substr($baseLis t, rand(0, strlen($baseLis t)-1), 1);

$x += 10 + mt_rand(0,10);

imagechar($imag e, mt_rand(3,5), $x, mt_rand(5,20), $actChar,

imagecoloralloc ate($image, mt_rand(0,155), mt_rand(0,155),
mt_rand(0,155)) );

$code .= strtolower($act Char);

}
header('Content-Type: image/jpeg');

imagejpeg($imag e);

imagedestroy($i mage);

$_SESSION['securityCode'] = $code;

?>

\

---------------------------------

[SrSilveira]

this may help you
http://www.php.net/manual/en/functio...char.php#54000

[Michael Fesser]

..oO(Twayne)

>Learning PHP code; playing with various methods of generating captcha
codes:

You should forget it. Graphical CAPTCHAs are a huge accessibility
problem and many of them are already broken and can be read by bots.
They are definitely _not_ a solution.

Micha

[Krustov]

<comp.lang.ph p>
<Michael Fesser>
<Tue, 08 Apr 2008 23:44:26 +0200>
<ij************ *************** *****@4ax.com>

Learning PHP code; playing with various methods of generating captcha
codes:

You should forget it. Graphical CAPTCHAs are a huge accessibility
problem and many of them are already broken and can be read by bots.
They are definitely _not_ a solution.

What do you suggest as a alternative ? .
--
www.krustov.co.uk

[Twayne]

this may help you

http://www.php.net/manual/en/functio...char.php#54000

Thanks, I have that manual; it's a great reference and that's one way to
do it, for sure. What I'm really doing is going through a learning
process with PHP and the GD and using captcha for a subject. I have
about three different and excellent methods pulled together and I'm
trying to figure out how to use the best parts of each in one, new
method. Mostly noodling for the education.

Appreciate the comeback!
--
Regards,

Twayne

Open Office isn't just for wimps anymore;
OOo is a GREAT MS Office replacement
www.openoffice.org

[rf]

"Twayne" <no****@devnull .spamcop.netwro te in news:%IUKj.4310 $mL2.220
@trndny03:

>.oO(Twayne)

>>Learning PHP code; playing with various methods of generating captcha
codes:

You should forget it. Graphical CAPTCHAs are a huge accessibility
problem and many of them are already broken and can be read by bots.
They are definitely _not_ a solution.

Micha

1. Who said anything about USING captcha codes on a web site? Only
you, I'm afraid.

Given that the vast majority of questions in this group relate to using
PHP to build web pages I would think the onus is on *you* to mention if
you are doing otherwise.
--
Richard
Killing all threads involving google groups
The Usenet Improvement Project: http://improve-usenet.org

[Richard]

"rf" <[e-mail] ote in message
news:82******** ********@news-server.bigpond. net.au...

"Twayne" <no****@devnull .spamcop.netwro te in
news:%IUKj.4310 $mL2.220
@trndny03:

>>.oO(Twayne)

Learning PHP code; playing with various methods of generating
captcha
codes:

You should forget it. Graphical CAPTCHAs are a huge accessibility
problem and many of them are already broken and can be read by
bots.
They are definitely _not_ a solution.

Micha

1. Who said anything about USING captcha codes on a web site?
Only
you, I'm afraid.

Given that the vast majority of questions in this group relate to
using
PHP to build web pages I would think the onus is on *you* to mention
if
you are doing otherwise.
--
Richard
Killing all threads involving google groups
The Usenet Improvement Project: http://improve-usenet.org

Ehm.... he DID mention that.
:-P
Richard.

[rf]

"Richard" <root@localhost wrote in news:47fc2c3d$0 $30410$dbd4d001
@news.euronet.n l:

>
"rf" <[e-mail] ote in message
news:82******** ********@news-server.bigpond. net.au...

>"Twayne" <no****@devnull .spamcop.netwro te in
news:%IUKj.431 0$mL2.220
@trndny03:

>>>.oO(Twayne )

Learning PHP code; playing with various methods of generating
captcha
codes:

You should forget it. Graphical CAPTCHAs are a huge accessibility
problem and many of them are already broken and can be read by
bots.
They are definitely _not_ a solution.

Micha

1. Who said anything about USING captcha codes on a web site?
Only
you, I'm afraid.

Given that the vast majority of questions in this group relate to
using
PHP to build web pages I would think the onus is on *you* to mention
if
you are doing otherwise.
--
Richard
Killing all threads involving google groups
The Usenet Improvement Project: http://improve-usenet.org

Ehm.... he DID mention that.
:-P
Richard.

Perhaps you could indicate exactly in the above quoted thread where the
OP specifically stated that this was *not* for use in a publicly viewable
web site. In my experience people "learn PHP" by building their first web
page.

--
Richard
Killing all threads involving google groups
The Usenet Improvement Project: http://improve-usenet.org

[Piotr]

Krustov wrote:

>They are definitely _not_ a solution.

What do you suggest as a alternative ? .

Here are some nice suggestions
http://www.w3.org/TR/turingtest/

best regards
Piotr

[Twayne]

"Twayne" <no****@devnull .spamcop.netwro te in news:%IUKj.4310 $mL2.220

@trndny03:

>>.oO(Twayne)

Learning PHP code; playing with various methods of generating
captcha codes:

You should forget it. Graphical CAPTCHAs are a huge accessibility
problem and many of them are already broken and can be read by bots.
They are definitely _not_ a solution.

Micha

1. Who said anything about USING captcha codes on a web site? Only
you, I'm afraid.

Given that the vast majority of questions in this group relate to
using PHP to build web pages I would think the onus is on *you* to
mention if you are doing otherwise.

lol, I *said* I was playing with it. Whether i plan to use it or not
has little to do with anything else. Any thinking person answers a
question and THEN if there are some followons, adds them as maybe
caveats or ... .
Answering questions that aren't asked are signs of ego problems at
the other end, IMO. I wrote the post properly for what I wanted to ask
about.

Twayne