references..

[tanita]

Hi,

I wrote a function, which crypts a string, like this:

function enCrypt($txt){

global $key, $iv;

$txt = mcrypt_encrypt (MCRYPT_RIJNDAEL_256, $key, $txt, MCRYPT_MODE_ECB, $iv);
return $txt;
}

I want to turnover the parameter as reference, like this:

function enCrypt(&$txt){

global $key, $iv;

$txt = mcrypt_encrypt (MCRYPT_RIJNDAEL_256, $key, $txt, MCRYPT_MODE_ECB, $iv);
}

But this don't work, any ideas why?

Thanks,

Tanja

[[deleted]]

"But this don't work, any ideas why?"

what doesn't it do?

[tanita]

hm,

I doesn't crypt the string which is in $txt!

With return $txt it is crypted...

Tanja

[[deleted]]

How are you calling the function?

[tanita]

Hi,

currently defined with return value:

encrypted:

$this->userpassword = enCrypt($spA[0]['userpassword'][0]);

decrypted:

$r = ldap_bind( $ds, $dnPers,deCrypt($this->userpassword) )

enough info?

Tanja

[[deleted]]

ya ok, but how do you call uit when you use the 'pass by reference' method?

[tanita]

sorry, I don't understand what you mean..?

[[deleted]]

this is how references normally work:

$txt = 'HELLO';
myfunction($txt);
echo $txt;

function(&$txt)
{
  $txt = strtolower($txt);
};

[tanita]

yes, I know. But instead of 'strtolower($txt);'
should stay 'mcrypt_encrypt (..., $txt, ...);' and work in the same way as it does in the function with return value..

I don't see whats wrong..

anyway, thanks

Tanja

[[deleted]]

Good, so you are using it the right way.
Hmm...
Any chance that the other vars are not set properly?
does it work if you replace the crypt functon with somethig like

$txt = "bubbles";
?

[tanita]

yes, ditto I tryed....🙁

Tanja

[Anon]

It should work...

I tried writing a function

di_md5(&$text)
{
return md5($text);
}
or
di1_md5($text)
{
return md5($test);
}

When I tried envoking any of the functions the function and pass variable $name="Dmitriy Nesterkin" to any of the above functions as a reference
echo di_md5(&$name);
or
echo di1_md5(&$name);

It works perfectly fine...

Di

[[deleted]]

and that worked or...?

[Anon]

Are you still calling your function like this:

$this->userpassword = enCrypt($spA[0]['userpassword'][0]);

You probably want this:

$this->userpassword = $spA[0]['userpassword'][0];

encrypt($this->userpassword);

[tanita]

Hi,

hm -

'$spA[0]['userpassword'][0]' is a variable like '$x'.

Assingning
$this->userpassword = $spA[0]['userpassword'][0];
or
$this->userpassword = enCrypt($spA[0]['userpassword'][0]);
or

$this->userpassword = $x;

AFAIK makes no diferences... (also tryed it out)

What I wan't to do is, during inititialization of variables in my objectclass, wich are saved in a session,
in this session the entry for userpassword should be displayd encrypted.

My solution already works. I just wanted to use the advatages for the references, that I don't have to define a return.

Thanks for yout hit,

Tanja

[tanita]

Hi,

yes, but you use a return value..

I found an example in a book, like that I wanted to define my funktion. Look here:

definition:

function make_b(&$html) {
$html = "$lt;b>".$html."</b<";
}

calling:

make_b($output);

Thanks,

Tanja

[Anon]

I know it's a variable, what I was getting at is that you are trying to use a pass by referance method now and I thought that you wanted the change to be in the $this->userpassword variable and not in the $spA variable.

If you pass by referance with the $spA variable then that is what will get changed and nothing will get set in the $this->userpassword unless you also have a return statement in your function.

[tanita]

Yes, your right. I wated to use pass by reference. I wrote to Dmitriy and wanted to use it like this:

definition:
function make_b(&$html) {
// isn't it possible calling an other function
// to assign $html?
$html = "$lt;b>".$html."</b<";
}
calling:
make_b($output);

Thats what I don't understand..

Tanja