Using PHP to find unicode of a character [duplicate]

Question

Possible Duplicate:
How to get code point number for a given character in a utf-8 string?

I have a sample code in javascript:

var str = "HELLO WORLD";
var n = str.charCodeAt(0);

This returns 72

How do I make this done in PHP?

Answer 1

ASCII

This will help:

//Code to Character
echo chr(65);

//Character to Code
echo ord('A');

Unicode

But since these function work for ASCII, for Unicode:

function uniord($u) {
    $k = mb_convert_encoding($u, 'UCS-2LE', 'UTF-8');
    $k1 = ord(substr($k, 0, 1));
    $k2 = ord(substr($k, 1, 1));
    return $k2 * 256 + $k1;
}

echo uniord('ب');