Installing PHP bitwasp bitcoin library I am attempting to set up the PHP bitwasp library from the github repository:

https://github.com/Bit-Wasp/bitcoin-php

The installing instructions suggest I simply execute:

$ composer require bitwasp/bitcoin

I do have composer installed but I am getting the following error message:

Problem 1
    - Installation request for bitwasp/bitcoin dev-master -&gt; satisfiable by bitwasp/bitcoin[dev-master].
    - Can only install one of: bitwasp/bitcoin[v0.0.29.1, dev-master].
    - Installation request for bitwasp/bitcoin v0.0.29.1 -&gt; satisfiable by bitwasp/bitcoin[v0.0.29.1].

I do not practice PHP full time so I lack the experience of installing packages in that language and using composer. I would be grateful if someone could point me in the right direction.

EDIT
The suggestion has been made that the package is already installed. However, the following code sample which I got from another thread:

&lt;?php
// failing to install bitwasp
use BitWasp\Bitcoin\Bitcoin;
use BitWasp\Bitcoin\Address;
use BitWasp\Bitcoin\Key\PrivateKeyFactory;

$network = Bitcoin::getNetwork();

$privateKey = PrivateKeyFactory::create(true);
$publicKey = $privateKey-&gt;getPublicKey();
$address = $publicKey-&gt;getAddress();

?&gt;


is giving me PHP Fatal error:  Class 'BitWasp\Bitcoin\Bitcoin' not found.
You have it installed already. That's why it's saying you have the requirements met and don't need to download it again.