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<?php
namespace BitWasp\Bitcoin\Script;
function decodeOpN($op)
{
if ($op === Opcodes::OP_0) {
return 0;
}
if (!($op === Opcodes::OP_1NEGATE || $op >= Opcodes::OP_1 && $op <= Opcodes::OP_16)) {
throw new \RuntimeException("Invalid opcode");
return (int) $op - (Opcodes::OP_1 - 1);
function encodeOpN($op)
if ($op === 0) {
return Opcodes::OP_0;
if (!($op === -1 || $op >= 1 && $op <= 16)) {
throw new \RuntimeException("Invalid value");
return (int) Opcodes::OP_1 + $op - 1;
Bit-Wasp /
bitcoin-php
