Question

While finishing my websites java login program and page, I decided to pass an encypted value through the URL to a validation page as an extra line of security. I have an encyrption algorithim that I wrote long ago that no one I know has cracked yet so I want to use that. But I need chars for it to properly work. From what I can tell, PHP doesn’t have a char type. So my question is first, is their a char type, and secondly, is it possible to convert that to an int? Side Note: Login is a signed applet so all pages are in PHP. Edit: Forgot to mention that this is just the base of encryption and I will be adding to the algorithim.

Answer 1

You can reference a character in a string $str by $str[$index].

The ord function will return a character’s integer value:

$val = ord($str[$index]); 

The chr function does the opposite:

$char = chr($val);//$char == $str[$index]