valadating random number

redarrow · July 1, 2006

Got any idears why this wont work please cheers.

<?php

$list = array("1","2","3","4","5","6","7","8","9","0",);

for ($i = 1; $i <= 6; $i++) {
$generated_code .= $list[rand(0,9)];

}

echo $generated_code;

$crack=($_POST['crack']);

if(!$_POST['submit']){

if($crack==$generated_code){

echo"You entered the correct code!";

}else{

echo "incorrect code!";

}

}

?>

<html>
<body>
<form method="post" action="">
<input type="text" name="crack">
<input type="submit" value="send">
</form>
</html>
</body>

mrwhale · July 1, 2006

[code]
<?php

$list = array( "1", "2", "3", "4", "5", "6", "7", "8", "9", "0" );

for( $i = 1; $i <= 6; $i++ ) {
$rand = rand( 0, 9 );
$generated_code .= $list[$rand];
}

echo $generated_code;

if( $_POST['submit'] )
{
$crack= $_POST['crack'];

if( $crack == $generated_code )
{
echo "You entered the correct code!";
}
else
{
echo "incorrect code!";
}
}

?>

<html>
<body>
<form method="post" action="">
<input type="text" name="crack">
<input type="submit" value="send">
</form>
</body>
</html>[/code]

redarrow · July 1, 2006

try it our self with the ! there i dont see nothink try.

if the number matches the crack should echo correct else not correct.

mrwhale · July 1, 2006

[code]<?php

$list = array( "1", "2", "3", "4", "5", "6", "7", "8", "9", "0" );

for( $i = 1; $i <= 6; $i++ ) {
$rand = rand( 0, 9 );
$generated_code .= $list[$rand];
}

echo $generated_code;

if( $_POST[validate] )
{
$crack = $_POST[crack];

if( $crack == $generated_code )
{
echo "<br><br>You entered the correct code!";
}
else
{
echo "<br><br>incorrect code!";
}
}

?>

<html>
<body>
<form method="post">
<input type="text" name="crack">
<input type="submit" name="validate" value="send">
</form>
</body>
</html>
[/code]

you didnt name the submit button

redarrow · July 1, 2006

gooing mad lol hair falling out dam thing .

wont work plase anyone try the code cheers.

mrwhale · July 1, 2006

the code i posted works, i tried it

redarrow · July 1, 2006

if you enter the number dosent echo success try sorry.

.josh · July 1, 2006

redarrow your code doesn't work because as was mentioned by whale, you did not name your submit button, and also you only set your script to check if they codes match if the user has not clicked on submit button yet. Remove the ! and name your submit button

if ([color=red]![/color]$_POST['submit']) { ... }

and

<input type="submit" value="send" [color=red]name='submit'[/color]>

mrwhale · July 1, 2006

thats because when you submit, a new code is generated, your constantly 1 step behind. thats why u need a fixed code, otherwise your going to be guessing for years

.josh · July 1, 2006

lol yeah that too. your generated code needs to be put inside a if(!$_POST['submit']) { ... }

redarrow · July 1, 2006

this is the code in the link try

<?php

$list = array( "1", "2", "3", "4", "5", "6", "7", "8", "9", "0" );

for( $i = 1; $i <= 6; $i++ ) {
$rand = rand( 0, 9 );
$generated_code .= $list[$rand];
}

echo $generated_code;

if( $_POST[validate] )
{
$crack = $_POST[crack];

if( $crack == $generated_code )
{
echo "<br><br>You entered the correct code!";
}
else
{
echo "<br><br>incorrect code!";
}
}

?>

<html>
<body>
<form method="post">
<input type="text" name="crack">
<input type="submit" name="validate" value="send">
</form>
</body>
</html>

.josh · July 1, 2006

change it to this:
[code]
<?php
if($_POST[validate] ) {
$crack = $_POST[crack];

if( $crack == $generated_code )
{
echo "

You entered the correct code!";
}
else
{
echo "

incorrect code!";
}
} else {
$list = array( "1", "2", "3", "4", "5", "6", "7", "8", "9", "0" );

for( $i = 1; $i <= 6; $i++ ) {
$rand = rand( 0, 9 );
$generated_code .= $list[$rand];
}

echo $generated_code;

}

?>

<html>
<body>
<form method="post">
<input type="text" name="crack">
<input type="submit" name="validate" value="send">
</form>
</body>
</html>
[/code]

redarrow · July 1, 2006

can it be solved with using sessions i wonder.

mrwhale · July 1, 2006

I will explain the method you are doing:

1. you generate the code
2. you submit a code
3. a new code is generated
4. the submited code checks if it is the same as the new generated code (this is different to the number echoed before the form)
5. you got like a billion to 1 chance of guessing the number.. lol

mrwhale · July 1, 2006

[quote author=redarrow link=topic=99080.msg390072#msg390072 date=1151744878]
can it be solved with using sessions i wonder.
[/quote]

easiest way to do it is do a query to insert into a table which stores the users ip address and the random number.

then when you submit it checks the database for the code and the same ip address

if no match is found it echos wrong, otherwise correct

.josh · July 1, 2006

okay revised code:
[code]
<?php
if($_POST['validate'] ) {
$crack = $_POST['crack'];
$generated_code = $_POST['generated_code'];
if( $crack == $generated_code )
{
echo "

You entered the correct code!";
}
else
{
echo "

incorrect code!";
}
} else {
$list = array( "1", "2", "3", "4", "5", "6", "7", "8", "9", "0" );

for( $i = 1; $i <= 6; $i++ ) {
$rand = rand( 0, 9 );
$generated_code .= $list[$rand];
}

echo $generated_code;

}

?>
<html>
<body>
<form method="post">
<input type="text" name="crack">
<input type='hidden' name='generated_code' value='<?= $generated_code ?>'>
<input type="submit" name="validate" value="send">
</form>
</body>
</html>

[/code]

redarrow · July 1, 2006

i agree so why not help me holp the last code genrated in a sssion will that do it.

that was funny lol..........................

everone you post wont work lol its a brain killer lol. sorry

redarrow · July 1, 2006

Crayon Violent

the code you posted is so good but becouse the value matches the echo success is always lol

brain teaser man lol............

there is a way to get a generated number to match via a form on one page but how sessions maybe
dont no but does exist promise

mrwhale · July 1, 2006

[quote author=mrwhale link=topic=99080.msg390075#msg390075 date=1151745078]
[quote author=redarrow link=topic=99080.msg390072#msg390072 date=1151744878]
can it be solved with using sessions i wonder.
[/quote]

easiest way to do it is do a query to insert into a table which stores the users ip address and the random number.

then when you submit it checks the database for the code and the same ip address

if no match is found it echos wrong, otherwise correct
[/quote]

bingo ;) not reading my posts :)

tomfmason · July 1, 2006

Here is a link for generating an image code and using sessions [url=http://www.evolt.org/securing_forms_random_image]http://www.evolt.org/securing_forms_random_image[/url]

redarrow · July 1, 2006

Thank you so much this will stop all the hart ake of users using a database method well done cheers.

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valadating random number

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