Using PHP to find unicode of a character

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');

Answer 2

The equivalent of the above would be

$str = "HELLO WORLD";
$n = ord($str[0]);

Answer 3

Check this contributed note in the docs here:

http://www.php.net/manual/en/function.ord.php

There's a function which returns the UTF-8 value, which is what I assume you want.

Answer 4

To be unicode aware you should try this one (http://us.php.net/manual/en/function.ord.php)

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;
}