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
want a code for uploading and downloading
i m trying to upload and download to my site..i need upload and download code ...i use a code for up
Why use interfaces in PHP (OOP)
I am learning OOP in PHP and its been a pretty good learning experience so far. What I didn't unders
Help! refer to a friend script with captcha code
Hi guys, I am posting on here in desperate need for some help with an ongoing search I have been doi
How would I do "Users not logged in since *** delete them"
I know how I would set this up, and delete the user roughly.
I'll create a table called "Use
PHP & Java
Hello,
can PHP code be used inside java code?
Code: <SCRIPT LANGUAGE="Java
phph within href not showing php if change ? to &
Code: [Select]<a href="<?php echo $puser; ?>?m=<?php=(($m-1)&l
Convert .fdf to .pdf
I currently have a web form that uploads the form data to an .fdf file and emails it.
However
add to sql result
ok see rite now my sites hit counter is counted from the mysql visitor log i need to clear it aft
Simple AND question
Hello,
I've got following code:
Code: if(strpos($row[13],"http://")
Need help: how to catch acess of undefined class properties
Hello. I am learning OO with PHP and have hit a problem.
Some code runs as perfectly valid code,