Eth protocol version.

src/Methods/Eth/ProtocolVersion.php

@@ -0,0 +1,91 @@
+<?php
+
+/**
+ * This file is part of web3.php package.
+ * 
+ * (c) Kuan-Cheng,Lai <alk03073135@gmail.com>
+ * 
+ * @author Peter Lai <alk03073135@gmail.com>
+ * @license MIT
+ */
+
+namespace Web3\Methods\Eth;
+
+use InvalidArgumentException;
+use Web3\Methods\IMethod;
+use Web3\Methods\JSONRPC;
+use Web3\Formatters\BigNumberFormatter;
+
+class ProtocolVersion extends JSONRPC implements IMethod
+{
+    /**
+     * inputFormatters
+     * 
+     * @var array
+     */
+    protected $inputFormatters = [];
+
+    /**
+     * outputFormatters
+     * 
+     * @var array
+     */
+    protected $outputFormatters = [
+        BigNumberFormatter::class
+    ];
+
+    /**
+     * construct
+     * 
+     * @param string $method
+     * @param array $arguments
+     * @return void
+     */
+    // public function __construct($method='', $arguments=[])
+    // {
+    //     parent::__construct($method, $arguments);
+    // }
+
+    /**
+     * getInputFormatters
+     * 
+     * @return array
+     */
+    public function getInputFormatters()
+    {
+        return $this->inputFormatters;
+    }
+
+    /**
+     * getOutputFormatters
+     * 
+     * @return array
+     */
+    public function getOutputFormatters()
+    {
+        return $this->outputFormatters;
+    }
+
+    /**
+     * transform
+     * 
+     * @param array $params
+     * @param array $rules
+     * @return array
+     */
+    public function transform($params, $rules)
+    {
+        if (!is_array($params)) {
+            throw new InvalidArgumentException('Please use array params when call transform.');
+        }
+        if (!is_array($rules)) {
+            throw new InvalidArgumentException('Please use array rules when call transform.');
+        }
+        foreach ($params as $key => $param) {
+            if (isset($rules[$key])) {
+                $params[$key] = call_user_func([$rules[$key], 'format'], $param);
+            }
+        }
+        return $params;
+    }
+}