php通过rpc调用以太坊

首先安装一个testrpc，用npm来安装。

# 安装 testrpc
npm install -g ethereumjs-testrpc    //testrpc现在用ganache-cli来替代了，npm install -g ganache-cli
# 安装 truffle #这个可以通过truffle进行查看当前的链内容，也可以通过truffle发币
npm install -g truffle

用testrpc模拟一个本地的私有链:testrpc -p 8646 -i 5266

-p 表示监听8646端口
-i 表示networkid为5266，ethereum主网id为1.

用curl发送post请求，就可以看到我们用testrpc启动后，系统自动创建的10个账户

//获取所有account
curl 127.0.0.1:8646 -X POST --data '{"id":5266,"jsonrpc":"2.0","method":"eth_accounts", "params":[]}' -H "Content-type: application/json;charset=UTF-8"

用curl发送post请求，就可以看到0xc9fb925d5c347185ce39ce6b627268a516ce4315账户剩下多少eth。

//获取单个用户的eth
curl -X POST --data    '{"id":5266,"jsonrpc":"2.0","method":"eth_getBalance", "params":["0xc9fb925d5c347185ce39ce6b627268a516ce4315","latest"]}' 127.0.0.1:8646 -H "Content-type: application/json;charset=UTF-8"

创建一个账号：

curl 127.0.0.1:8545 -X POST --data '{"id":5266,"jsonrpc":"2.0","method":"personal_newAccount", "params":["yourAccountPassword"]}' -H "Content-type: application/json;charset=UTF-8"
//yourAccountPassword是字母和数字的结合最好

来一段php代码：

<?php
//header("Content-type:application/json;charset=utf-8");
function http_post_data($url, $data_string)
{
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
    curl_setopt($ch, CURLOPT_HTTPHEADER, [
            "Content-Type: application/json; charset=utf-8",
            "Content-Length: " . strlen($data_string)]
    );
    ob_start();
    curl_exec($ch);
    $return_content = ob_get_contents();
    ob_end_clean();
    $return_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    return [$return_code, $return_content];
}
//curl -X POST --data '{"id":5266,"jsonrpc":"2.0","method":"eth_getBalance", "params":["0xc9fb925d5c347185ce39ce6b627268a516ce4315","latest"]}' 127.0.0.1:8646
$params = ["0x41de94fb75cc86856306433340430d1ae63dc30c", "latest"];
$data   = ["id" => 5266, "jsonrpc" => "2.0", "method" => "eth_getBalance", 'params' => $params];
$url  = '127.0.0.1:8646';
$data = json_encode($data);
list($return_code, $return_content) = http_post_data($url, $data);  //return_code是http状态码
var_dump($return_content);

怎么样？简单吧?来，鼓个掌。！！！！

注：也可以通过goeth来启动一个私链：

echo "===== Starting geth node =====";
set -x;
nohup geth --datadir $GETH_HOME -verbosity $VERBOSITY --bootnodes $BOOTNODE_URLS --maxpeers $MAX_PEERS --nat none --networkid $NETWORK_ID --identity $IDENTITY $MINE_OPTIONS $FAST_SYNC --rpc --rpcaddr "$IPADDR" --rpccorsdomain "*" --rpcapi "eth,net,web3,admin,personal" >> $GETH_LOG_FILE_PATH 2>&1 &
if [ $? -ne 0 ]; then echo "Previous command failed. Exiting"; exit $?; fi
set +x;
echo "===== Started geth node =====";

以太坊官方JSON-RPC：
https://github.com/ethereum/wiki/wiki/JSON-RPC
https://blogs.msdn.microsoft.com/pkirchner/2017/07/12/getting-started-with-ethereum-tutorials-on-azure/

php通过rpc调用以太坊

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