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<?php
namespace BitWasp\Bitcoin\Script\Interpreter;
use BitWasp\Bitcoin\Exceptions\ScriptStackException;
use BitWasp\Bitcoin\Flags;
use BitWasp\Bitcoin\Math\Math;
use BitWasp\Bitcoin\Script\Interpreter\InterpreterInterface;
use BitWasp\Buffertools\Buffer;
class ScriptNum extends Buffer
{
/**
* @param Math $math
* @param Flags $flags
* @param Buffer $vch
* @param int $size
* @throws ScriptStackException
* @throws \Exception
*/
public function __construct(Math $math, Flags $flags, Buffer $vch, $size = 4)
if (!is_numeric($size)) {
throw new \RuntimeException('ScriptNum size must be numeric');
}
$bufferSize = $vch->getSize();
if ($bufferSize > $size) {
throw new ScriptStackException('a'.InterpreterInterface::VERIFY_MINIMALDATA);//, 'Script number overflow');
$str = $vch->getBinary();
if ($flags->checkFlags(InterpreterInterface::VERIFY_MINIMALDATA) && $bufferSize > 0) {
if ((ord($str[0]) & 0x7f) === 0) {
if ($bufferSize <= 1 || (ord($str[1]) & 0x7f) === 0) {
throw new ScriptStackException('b'.InterpreterInterface::VERIFY_MINIMALDATA);//, 'Non-minimally encoded integer');
if ($bufferSize === 0) {
$str = "\x00";
$this->math = $math;
parent::__construct($str, $size, $math);
* @return Buffer
public function getBuffer()
return new Buffer($this->buffer, null, $this->math);
Bit-Wasp /
bitcoin-php
