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Jun 26th, 2008, 12:42 AM
#1
Thread Starter
Hyperactive Member
image verification
hello everybody 
I found a code for making a verification image, but the problem that the image produced is so simple so anybody can use a program to analyize it and figure out the characters so it is not save(then they can use programs to generates new account automatically)
So, what I want is to complicate the image produced. I want the image the one which we can see when we search in google by using proxys.
Here is The Code:
Code:
<?php
/*header*/
Header("Content-Type: image/png");
/* initialize a session. */
session_start();
/*We'll set this variable later.*/
$new_string;
/*register the session variable. */
session_register('new_string');
/*You will need these two lines below.*/
echo "<html><head><title>Verification</title></head>";
echo "<body>";
/* set up image, the first number is the width and the second is the height*/
$im = ImageCreate(200, 40);
/*creates two variables to store color*/
$white = ImageColorAllocate($im, 255, 255, 255);
$black = ImageColorAllocate($im, 0, 0, 0);
/*random string generator.*/
/*The seed for the random number*/
srand((double)microtime()*1000000);
/*Runs the string through the md5 function*/
$string = md5(rand(0,9999));
/*creates the new string. */
$new_string = substr($string, 17, 5);
/*fill image with black*/
ImageFill($im, 0, 0, $black);
/*writes string */
ImageString($im, 4, 96, 19, $new_string, $white);
/* output to browser*/
ImagePNG($im, "verify.png");
ImageDestroy($im);
echo "<img src=\"verify.png\">";
echo "<br><br>";
echo "Type the code you see in the image in the box below. (case sensitive)";
echo " <form action=\"formhandler.php\" method=post>";
echo "<input name=\"random\" type=\"text\" value=\"\">";
echo "<input type=\"submit\">";
echo "</form>";
echo "</body>";
echo "</html>";
?>
Thank's alot
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Jun 26th, 2008, 12:52 AM
#2
Re: image verification
you could use a third party app like re-captcha
edit:
a quick google search gave me this:
http://www.white-hat-web-design.co.u...hp-captcha.php
Last edited by dclamp; Jun 26th, 2008 at 12:55 AM.
My usual boring signature: Something
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Jun 26th, 2008, 01:25 AM
#3
Thread Starter
Hyperactive Member
Re: image verification
Thx alot bro 
yes it is much complicated & works fine. I hope it is safe enough!
Thx
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Jun 26th, 2008, 01:11 PM
#4
My usual boring signature: Something
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