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:
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
34
Other forums
cyrillic string conversion question
Hello,
First time here...
I would like to know if there is a way to convert a
RadioButtonList item spacing
I have a RadioButtonList and I can't put any spacing between the items. They are arranged verticall
array_combine() error
getting an "Warning: array_combine() [function.array-combine]: Both parameters should have an e
Problem assigning value to variable in "IF" function
Does this script makes sense? I am trying to take the value that is set to "authenticat" a
Array question
Does anyone know how to create a program that takes the $ amount for 8 different departments and gi
how can i expire the submitted page using session.
hi,
i'm new to php world.
i'm using "post" method.
when i submit it,data goes to
simple php table loop
Hi all,
I've the following code
<?php // Create category options
Query output more than expected
$query=mysql_query("SELECT * FROM players, communities, divisions WHERE dob BETWEEN '{$start_da
MySql timezone
Code: $sql = "SELECT *, date_format(date, '%m/%d/%Y at %I:%i %p' )as date FROM comments WHERE t
COOIS - Saving Object Overview WIP Status layouts
COOIS - Would like to be able to save the layout of an Object Overview - WIP Status report. There i