[ANN] Bitcoin currency wrapper for PHP

Bitcoin currency wrapper for PHP | version alpha

Bitcoin currency wrapper is collection of number wrappers with adjustable precision for PHP.

Github
https://github.com/misog/btc-currency-wrapper-php

Units

Bitcoin (BTC) = 1 BTC
Satoshi (sBTC) = 0.00000001 BTC
Centbitcoin (cBTC) = 0.01 BTC
Milibitcoin (mBTC) = 0.001 BTC
Microbitcoin (uBTC) = 0.000001 BTC
Atomicbitcoin (atomicBTC) = currently Satoshi

Arithmetic and logical operations

sub
mul
div
abs
less
greater
equals

Classes and structure
- Number
   - Currency extends Number
      - BTC extends Currency
         - cBTC extends BTC
         - mBTC extends BTC
         - uBTC extends BTC
         - sBTC extends BTC
         - atomicBTC extends BTC
      - EUR extends Currency

Usage examples

Code:

	/* Basic operations */
	$btc1 = new BTC("1");
	$btc2 = new BTC("0.005");
	$btc3 = $btc1->add($btc2);
	echo $btc1->getValue(); // "1.00000000"
	echo $btc2->getValue(); // "0.00500000"
	echo $btc3->getValue(); // "1.00500000"
	
	/* Operations with different units */
	$btc = new BTC("2");
	$s_btc = new sBTC("1"); // Satoshi
	echo $btc->add($s_btc)->getValue(); // "2.00000001"
	echo $s_btc->add($btc)->getValue(); // "200000001"
	echo $s_btc->add($btc)->getBitcoinValue(); // "2.00000001"

	/* Unit conversion */
	$converted_btc = new BTC($s_btc);
	echo $converted_btc->getValue(); // "0.00000001"
	$converted_satoshi = new sBTC($btc);
	echo $converted_satoshi->getValue(); // "200000000"

	/* Precision */
	$btc = new BTC("2");
	$result = $btc->div(new Number('3'));
	echo $result->getValue(); // "0.66666666" (truncated), not rounded "0.66666667" - better lost Satoshi than arise Satoshi

License
MIT - http://opensource.org/licenses/MIT

Donations
BTC: 1ByESbFGcfqcQU5fV2TNoHj7VdUAT6HsjJ