Captcha problem users just refresh and it will let them auto submit again


Posted on 16th Feb 2014 07:03 pm by admin

Users will just re submit and not have to enter the new captcha.. ? Lol but if i refresh the page, the captcha auto makes a new1 so u cant submit.

But if u enter captcha code alrdy, then submit form correctly, and press refresh to auto submit form, it does it? This is a major security risk here is my code, thanks:

Did you know?Explore Trending and Topic pages for more stories like this.
Code: session_start();

$RandomStr = md5(microtime());// md5 to generate the random string
$text = rand(10000,99999);
$_SESSION["key"] = $text;
$height = 25;
$width = 35;

$image_p = imagecreate($width, $height);
$black = imagecolorallocate($image_p, 100, 5, 5);
$white = imagecolorallocate($image_p, 155, 155, 025);
$font_size = 16;
$text=substr($_SESSION['key'],0,3);
imagestring($image_p, $font_size, 5, 5, $text, $white);
imagejpeg($image_p, null, 80);

then my HTML:

Code: <tr class="bts ce"><td colspan=2><b>Security Code Confirmation</b></td></tr>

<tr>
<td align="right">Your unique security code<input type="hidden" name="secId" value="76c2b0e6f20ed0f1b209bcf39dee8e06"></td>
<td>
<img src="php_captcha.php">

<span class="desc">If The images are broke, please contact us.</span></span>
</td>
</tr>
Is there a way so people cant auto submit form?

Captcha works if u refresh but people can just auto submit the form and it will keep submiiting...
No comments posted yet

Your Answer:

Login to answer
312 Like 34 Dislike
Previous forums Next forums
Other forums

Writting a script to arrange images........ need some help
Ok so here is the link

http://hmtotc.com/dev/projects/vrassociates/jeweler_dev/admin/index.ph

problem in program for counting no of chars using pointers
Hi all, I was trying to make a program which counts number of chars in a string using concpt of poin

whats wrong with my code please help!!!
this is the error


Warning: mysql_close(): supplied argument is not a valid MySQL-Link res

restricting another login once you logout
Hello,

how can I restrict a page from login authenticating against info in a MySQL DB for a s

Need some ideas as to how to go about sorting this array...
Here's how the array's are created..

Code: <?php
while ($x = readdir($dp)) {

Open/Close Links in Php
Hello, Hoping someone can inform me how I can get PHP to automatically open a set of links in a new

Pro-rata Billing in Periodic Billing for Rental
Hi guys,

We have a situation, where a rental contract starts at the mid of the month say

Word filter problem
Hello,

im trying to make a filter for words inputted in to my website but i want to store the

foreach result into a single variable
Hi,

I have this code...

Code: [Select]foreach ($_POST['Interests'] as $interest =&

Inserting 100x and 100y coordinates in mysql table - easy
Is there a way to insert this data into a mysql table named 'map' with the fields: 'x int 3' , 'y in

Sign up to write
Sign up now if you have flare of writing..
Login   |   Register
Follow Us
Indyaspeak @ Facebook Indyaspeak @ Twitter Indyaspeak @ Pinterest RSS



Play Free Quiz and Win Cash