Dynamicaly update a field

[homer09001]

okay i want to write a simple script then when you enter a word into a text box it instantly without refreshing the page md5 encrypts it and show it under neath the text box but how?

[glcarlstrom]

Probably not with PHP. PHP is a server-side language; to encrypt that word, you have to transmit it from the client to the server, which generally requires loading a new page (unless you want to get into using AJAX, which is overly complicated for this kind of page).

There's a number of Javascript implementations of the MD5 algorithm available on the web (just Google "Javascript MD5"). That's probably your best bet -- a Javascript function that reads the contents of the text box and encrypts it.

[homer09001]

well can i not just encrypt it on the page using PHP then get javascript to call the variable?

[bpat1434]

No. If you want a "refresh-less" page, then you have to use a Client-Side scripting language. PHP REQURIES a refresh/reload in order to do anything with the data from a form. You can do what you want in Javascript, or just make it a password field, and md5() it in the next php script.

~Brett

[emptyfish]

If your using a password field, then the user wont be able to see the password that hes typing, so when he clicks submit, thats when you encrypt it.