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Pull Request — master (#240)
by thomas
73:04
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1 
<?php
2 

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    3
                

                                    
                                                    
                
                
                
require "vendor/autoload.php";

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
                    4
                

                                    
                                                    
                
                
                

            


            
                                                                        
                            
            
                                    
            
            

                
                    5
                

                                    
                                                    
                
                
                
use BitWasp\Buffertools\Buffer;

            


            
                                                                        
                            
            
                                    
            
            

                
                    6
                

                                    
                                                    
                
                
                
use BitWasp\Bitcoin\Key\PrivateKeyFactory;

            


            
                                                                        
                            
            
                                    
            
            

                
                    7
                

                                    
                                                    
                
                
                
use BitWasp\Bitcoin\Transaction\OutPoint;

            


            
                                                                        
                            
            
                                    
            
            

                
                    8
                

                                    
                                                    
                
                
                
use BitWasp\Bitcoin\Script\Interpreter\InterpreterInterface as I;

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
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This use statement conflicts with another class in this namespace, I.
                                                                                                

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
Let’s assume that you have a directory layout like this:


.
|-- OtherDir
|   |-- Bar.php
|   `-- Foo.php
`-- SomeDir
    `-- Foo.php





and let’s assume the following content of Bar.php:


// Bar.php
namespace OtherDir;

use SomeDir\Foo; // This now conflicts the class OtherDir\Foo





If both files OtherDir/Foo.php and SomeDir/Foo.php are loaded in the
same runtime, you will see a PHP error such as the following:


PHP Fatal error:  Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php





However, as OtherDir/Foo.php does not necessarily have to be loaded and the
error is only triggered if it is loaded before OtherDir/Bar.php, this problem
might go unnoticed for a while. In order to prevent this error from surfacing,
you must import the namespace with a different alias:


// Bar.php
namespace OtherDir;

use SomeDir\Foo as SomeDirFoo; // There is no conflict anymore.





                        

                                                    

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                    9
                

                                    
                                                    
                
                
                
use BitWasp\Bitcoin\Transaction\TransactionFactory;

            


            
                                                                        
                            
            
                                    
            
            

                
                    10
                

                                    
                                                    
                
                
                
use BitWasp\Bitcoin\Script\WitnessProgram;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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                    12
                

                                    
                                                    
                
                
                
$wif = 'QP3p9tRpTGTefG4a8jKoktSWC7Um8qzvt8wGKMxwWyW3KTNxMxN7';

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    13
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    14
                

                                    
                                                    
                
                
                
\BitWasp\Bitcoin\Bitcoin::setNetwork(\BitWasp\Bitcoin\Network\NetworkFactory::bitcoinSegnet());

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    15
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
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                    17
                

                                    
                                                    
                
                
                
$key = PrivateKeyFactory::fromWif($wif);

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    18
                

                                    
                                                    
                
                
                
$pub = $key->getPublicKey();

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    19
                

                                    
                                                    
                
                
                
$addr = $pub->getAddress();

            


            
                                                                                                            
                            
            
                                    
            
            

                
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                    21
                

                                    
                                                    
                
                
                
echo $addr->getAddress() . "\n";

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    22
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    23
                

                                    
                                                    
                
                
                
$redeemScript = \BitWasp\Bitcoin\Script\ScriptFactory::p2sh()->multisig(1, [$pub]);

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    24
                

                                    
                                                    
                
                
                
$os = $redeemScript->getOutputScript();

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    25
                

                                    
                                                    
                
                
                
$addrSH = $redeemScript->getAddress();

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    26
                

                                    
                                                    
                
                
                
echo $addrSH->getAddress() . PHP_EOL;

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    27
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    28
                

                                    
                                                    
                
                
                
$outpoint = new OutPoint(Buffer::hex('9065ff2553b170d0159a6781654a6e43c9aea883cef757b016bff2685ef8504b'), 0);

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    29
                

                                    
                                                    
                
                
                
$value = (new \BitWasp\Bitcoin\Amount())->toSatoshis('0.5');

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    30
                

                                    
                                                    
                
                
                
$scriptPubKey = $os;

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    31
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    32
                

                                    
                                                    
                
                
                
$spend = TransactionFactory::build()

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    33
                

                                    
                                                    
                
                
                
    ->spendOutPoint($outpoint)

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    34
                

                                    
                                                    
                
                
                
    ->payToAddress('49000000', $addr)

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    35
                

                                    
                                                    
                
                
                
    ->getAndReset();

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    36
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    37
                

                                    
                                                    
                
                
                
$spend = (new \BitWasp\Bitcoin\Transaction\Factory\TxWitnessSigner($spend, \BitWasp\Bitcoin\Bitcoin::getEcAdapter()))

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    38
                

                                    
                                                    
                
                
                
    ->sign(0, '500000000', $key, $scriptPubKey, $redeemScript, \BitWasp\Bitcoin\Transaction\SignatureHash\SigHash::ALL)

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    39
                

                                    
                                                    
                
                
                
    ->get();

            


            
                                                                                                            
                            
            
                                    
            
            

                
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                    41
                

                                    
                                                    
                
                
                
$consensus = \BitWasp\Bitcoin\Script\ScriptFactory::consensus(\BitWasp\Bitcoin\Script\Interpreter\InterpreterInterface::VERIFY_P2SH);

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    42
                

                                    
                                                    
                
                
                
$validator = $spend->validator()->checkSignature($consensus, 0, '50000000', $scriptPubKey);

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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echo $spend->getHex() . "\n";

            


            
                                                        
            
                                    
            
            

                
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var_dump($validator);