Code is not functional yet
Create a transaction should look somehow like this:
$transactionBuilder->addTxInput($outputTransactionHash,
$outputIndex
)
->addTxOutput($amountInSatoshi,
$scriptBuilder->addData('HELLO') //sig Script
->addOpCode($OpCodes::OP_DUP)
->addData('HELLO2')
->addOpCode($OpCodes::OP_EQUAL)
->getRawScript()
)
)
->sign....
->getRawTransaction();