Is it possible to assign a javascript value to a php variable?

Question

I have a (php) array of blowfish encrypted data posted from a form-submit. I have a blowfish algorithm in javascript.

var bf = new Blowfish('12345678901234567');
var ciphertext = bf.encrypt('test data');
alert(ciphertext);
var plaintext = bf.decrypt(ciphertext);
alert(plaintext);

I need to use this javascript blowfish code to decrypt the array of data and save the decrypted data in database.

How can I do this? Can the decrypted value from javascript be assigned to a php variable? Pleas Help...

possible duplicate of stackoverflow.com/questions/4747186/… — Gaurav
– Gaurav, Commented Apr 7, 2011 at 13:08
Exact duplicate stackoverflow.com/search?q=javascript+variable+to+php — powtac
– powtac, Commented Apr 7, 2011 at 13:09
I think that you're going to need an ajax call but I don't know how to do that in pure javascript. — Belinda
– Belinda, Commented Apr 7, 2011 at 14:31

dominicbri7 · Accepted Answer · 2011-04-07 13:10:46Z

3

PHP is executed server-side (first, it then send the computed HTML etc. to the client), and JavaScript is executed client-side (last).

It would be possible to assign a PHP value to a javascript variable in a PHP file, for example :

<?php
    $myValue = 42;
?>
<script type="text/JavaScript">
    var aVariable = <?=$myValue?>;
</script>

You can't do the opposite (what you asked).

What were you trying to do? Maybe we can help you.

answered Apr 7, 2011 at 13:10

dominicbri7

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TJHeuvel · Accepted Answer · 2011-04-07 13:09:58Z

1

Dont you just want to use blowfish in PHP? You can use the crypt function for that.

http://php.net/manual/en/function.crypt.php

answered Apr 7, 2011 at 13:09

TJHeuvel

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wired00 · Accepted Answer · 2011-04-07 22:04:29Z

0

as TJHeuvel above says you should be capturing the post variables in PHP on the SERVER side not processing with CLIENT side Javascript

answered Apr 7, 2011 at 22:04

wired00

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