Add validator and update validators

Change: * Add validator and verify message * Update validators
2019-05-01 21:27:51 +08:00
81 changed files with 283 additions and 390 deletions
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@ -1,49 +0,0 @@
-name: PHP
-
-on: ["push", "pull_request", "workflow_dispatch"]
-
-jobs:
-  build_and_test:
-    name: Build and test web3.php with ${{ matrix.php-version }}
-    strategy:
-      matrix:
-        php-version: ["7.3", "7.4", "8.0"]
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - name: Setup PHP
-      uses: shivammathur/setup-php@v2
-      with:
-          php-version: ${{ matrix.php-version }}
-
-    - name: PHP version
-      run: |
-        php --version
-
-    - name: Install nodejs and ganache-cli
-      run: |
-        sudo apt-get update -y
-        sudo apt-get install -y nodejs
-        sudo npm install -g ganache-cli
-
-    - uses: actions/checkout@v2
-
-    - name: Validate composer.json and composer.lock
-      run: composer validate
-
-    - name: Cache Composer packages
-      id: composer-cache
-      uses: actions/cache@v2
-      with:
-        path: vendor
-        key: ${{ runner.os }}-php-${{ matrix.php-version }}-${{ hashFiles('**/composer.lock') }}
-        restore-keys: |
-          ${{ runner.os }}-php-${{ matrix.php-version }}-
-
-    - name: Install dependencies
-      if: steps.composer-cache.outputs.cache-hit != 'true'
-      run: composer install --prefer-dist --no-progress --no-suggest
-
-    - name: Run test suite
-      run: sudo scripts/test.sh
--- a/.travis.yml
+++ b/.travis.yml
@ -5,8 +5,6 @@ language: php
 php:
  - 7.1
  - 7.2
-  - 7.3
-  - 7.4

 before_install:
  - nvm install 8
@ -26,4 +24,4 @@ script:
  - scripts/test.sh

 after_success:
-    - bash <(curl -s https://codecov.io/bash) -t 76a0abaf-bbc4-4829-b5b8-474f10a6b9e9
+    - bash <(curl -s https://codecov.io/bash) -t 8436848f-9a99-4b49-be60-629d7ff9a62c
--- a/README.md
+++ b/README.md
@ -1,10 +1,9 @@
 # web3.php

-[![PHP](https://github.com/web3p/web3.php/actions/workflows/php.yml/badge.svg)](https://github.com/web3p/web3.php/actions/workflows/php.yml)
-[![Build Status](https://travis-ci.org/web3p/web3.php.svg?branch=master)](https://travis-ci.org/web3p/web3.php)
-[![codecov](https://codecov.io/gh/web3p/web3.php/branch/master/graph/badge.svg)](https://codecov.io/gh/web3p/web3.php)
+[![Build Status](https://travis-ci.org/sc0Vu/web3.php.svg?branch=master)](https://travis-ci.org/sc0Vu/web3.php)
+[![codecov](https://codecov.io/gh/sc0Vu/web3.php/branch/master/graph/badge.svg)](https://codecov.io/gh/sc0Vu/web3.php)
 [![Join the chat at https://gitter.im/web3-php/web3.php](https://img.shields.io/badge/gitter-join%20chat-brightgreen.svg)](https://gitter.im/web3-php/web3.php)
-[![Licensed under the MIT License](https://img.shields.io/badge/License-MIT-blue.svg)](https://github.com/web3p/web3.php/blob/master/LICENSE)
+[![Licensed under the MIT License](https://img.shields.io/badge/License-MIT-blue.svg)](https://github.com/sc0Vu/web3.php/blob/master/LICENSE)


 A php interface for interacting with the Ethereum blockchain and ecosystem.
@ -18,13 +17,13 @@ Set minimum stability to dev

 Then
 ```
-composer require web3p/web3.php dev-master
+composer require sc0vu/web3.php dev-master
 ```

 Or you can add this line in composer.json

 ```
-"web3p/web3.php": "dev-master"
+"sc0vu/web3.php": "dev-master"
 ```


@ -217,7 +216,7 @@ If you are using docker as development machain, you can try [ethdock](https://gi

 1. Clone the repo and install packages.
 ```
-git clone https://github.com/web3p/web3.php.git && cd web3.php && composer install
+git clone https://github.com/sc0Vu/web3.php.git && cd web3.php && composer install
 ```

 2. Run test script.
@ -229,7 +228,7 @@ vendor/bin/phpunit

 1. Clone the repo and run docker container.
 ```
-git clone https://github.com/web3p/web3.php.git
+git clone https://github.com/sc0Vu/web3.php.git
 ```

 2. Copy web3.php to web3.php/docker/app directory and start container.
@ -284,12 +283,5 @@ mv /usr/local/etc/php/conf.d/extension-config-name to/directory

 Todo.

-# Contribution
-
-Thank you to all the people who already contributed to web3.php!
-<a href="https://github.com/web3p/web3.php/graphs/contributors">
-  <img src="https://contrib.rocks/image?repo=web3p/web3.php" />
-</a>
-
 # License
 MIT
--- a/composer.json
+++ b/composer.json
@ -1,5 +1,5 @@
 {
-    "name": "web3p/web3.php",
+    "name": "sc0vu/web3.php",
    "description": "Ethereum web3 interface.",
    "type": "library",
    "license": "MIT",
@ -10,14 +10,14 @@
        }
    ],
    "require": {
-        "guzzlehttp/guzzle": "^6.3|^7.0",
-        "PHP": "^7.2|^8.0",
+        "guzzlehttp/guzzle": "~6.0",
+        "PHP": "^7.1",
        "kornrunner/keccak": "~1.0",
-        "phpseclib/phpseclib": "~2.0.30",
+        "phpseclib/phpseclib": "~2.0.11",
        "ext-mbstring": "*"
    },
    "require-dev": {
-        "phpunit/phpunit": "~8.0|~9.0"
+        "phpunit/phpunit": "~6.0"
    },
    "autoload": {
        "psr-4": {
--- a/docker/php/Dockerfile-71
+++ b/docker/php/Dockerfile-71
@ -1,4 +1,4 @@
-FROM php:7.1-alpine
+FROM php:7.1.14-alpine

 MAINTAINER Peter Lai <alk03073135@gmail.com>

@ -8,10 +8,6 @@ COPY composer-setup.php composer-setup.php
 RUN apk update && \
    apk add git

-# Install gmp
-Run apk add gmp-dev && \
-    docker-php-ext-install gmp
-
 # Install nodejs
 # Run apk add --update nodejs nodejs-npm

--- a/docker/php/Dockerfile-72
+++ b/docker/php/Dockerfile-72
@ -1,4 +1,4 @@
-FROM php:7.2-alpine
+FROM php:7.2.2-alpine

 MAINTAINER Peter Lai <alk03073135@gmail.com>

@ -8,10 +8,6 @@ COPY composer-setup.php composer-setup.php
 RUN apk update && \
    apk add git

-# Install gmp
-Run apk add gmp-dev && \
-    docker-php-ext-install gmp
-
 # Install nodejs
 # Run apk add --update nodejs nodejs-npm

--- a/docker/php/Dockerfile-73
+++ b/docker/php/Dockerfile-73
@ -1,23 +0,0 @@
-FROM php:7.3-alpine
-
-MAINTAINER Peter Lai <alk03073135@gmail.com>
-
-COPY composer-setup.php composer-setup.php
-# COPY php.ini-production $PHP_INI_DIR/php.ini
-
-RUN apk update && \
-    apk add git
-
-# Install gmp
-Run apk add gmp-dev && \
-    docker-php-ext-install gmp
-
-# Install nodejs
-# Run apk add --update nodejs nodejs-npm
-
-# Install composer
-RUN php composer-setup.php && \
-    php composer-setup.php --install-dir=/usr/bin --filename=composer && \
-    php -r "unlink('composer-setup.php');"
-
-WORKDIR /app
--- a/docker/php/Dockerfile-74
+++ b/docker/php/Dockerfile-74
@ -1,23 +0,0 @@
-FROM php:7.4-alpine
-
-MAINTAINER Peter Lai <alk03073135@gmail.com>
-
-COPY composer-setup.php composer-setup.php
-# COPY php.ini-production $PHP_INI_DIR/php.ini
-
-RUN apk update && \
-    apk add git
-
-# Install gmp
-Run apk add gmp-dev && \
-    docker-php-ext-install gmp
-
-# Install nodejs
-# Run apk add --update nodejs nodejs-npm
-
-# Install composer
-RUN php composer-setup.php && \
-    php composer-setup.php --install-dir=/usr/bin --filename=composer && \
-    php -r "unlink('composer-setup.php');"
-
-WORKDIR /app
--- a/docker/php/Dockerfile-80
+++ b/docker/php/Dockerfile-80
@ -1,23 +0,0 @@
-FROM php:8.0-alpine
-
-MAINTAINER Peter Lai <alk03073135@gmail.com>
-
-COPY composer-setup.php composer-setup.php
-# COPY php.ini-production $PHP_INI_DIR/php.ini
-
-RUN apk update && \
-    apk add git
-
-# Install gmp
-Run apk add gmp-dev && \
-    docker-php-ext-install gmp
-
-# Install nodejs
-# Run apk add --update nodejs nodejs-npm
-
-# Install composer
-RUN php composer-setup.php && \
-    php composer-setup.php --install-dir=/usr/bin --filename=composer && \
-    php -r "unlink('composer-setup.php');"
-
-WORKDIR /app
--- a/phpunit.xml
+++ b/phpunit.xml
@ -7,7 +7,8 @@
         convertNoticesToExceptions="true"
         convertWarningsToExceptions="true"
         processIsolation="false"
-         stopOnFailure="false">
+         stopOnFailure="false"
+         syntaxCheck="false">

    <testsuite name="Web3.php unit test">
        <directory suffix="Test.php">./test/unit</directory>
--- a/src/Contract.php
+++ b/src/Contract.php
@ -28,10 +28,8 @@ use Web3\Contracts\Types\Str;
 use Web3\Contracts\Types\Uinteger;
 use Web3\Validators\AddressValidator;
 use Web3\Validators\HexValidator;
-use Web3\Validators\StringValidator;
-use Web3\Validators\TagValidator;
-use Web3\Validators\QuantityValidator;
 use Web3\Formatters\AddressFormatter;
+use Web3\Validators\StringValidator;

 class Contract
 {
@ -98,22 +96,14 @@ class Contract
     */
    protected $ethabi;

-    /**
-     * defaultBlock
-     *
-     * @var mixed
-     */
-    protected $defaultBlock;
-
    /**
     * construct
     *
     * @param string|\Web3\Providers\Provider $provider
     * @param string|\stdClass|array $abi
-     * @param mixed $defaultBlock
     * @return void
     */
-    public function __construct($provider, $abi, $defaultBlock = 'latest')
+    public function __construct($provider, $abi)
    {
        if (is_string($provider) && (filter_var($provider, FILTER_VALIDATE_URL) !== false)) {
            // check the uri schema
@ -147,11 +137,6 @@ class Contract
                }
            }
        }
-        if (TagValidator::validate($defaultBlock) || QuantityValidator::validate($defaultBlock)) {
-            $this->defaultBlock = $defaultBlock;
-        } else {
-            $this->$defaultBlock = 'latest';
-        }
        $this->abi = $abiArray;
        $this->eth = new Eth($this->provider);
        $this->ethabi = new Ethabi([
@ -227,7 +212,7 @@ class Contract

    /**
     * setProvider
-     *
+     * 
     * @param \Web3\Providers\Provider $provider
     * @return $this
     */
@ -239,35 +224,9 @@ class Contract
        return $this;
    }

-    /**
-     * getDefaultBlock
-     * 
-     * @return string
-     */
-    public function getDefaultBlock()
-    {
-        return $this->defaultBlock;
-    }
-
-    /**
-     * setDefaultBlock
-     *
-     * @param mixed $defaultBlock
-     * @return $this
-     */
-    public function setDefaultBlock($defaultBlock)
-    {
-        if (TagValidator::validate($defaultBlock) || QuantityValidator::validate($defaultBlock)) {
-            $this->defaultBlock = $defaultBlock;
-        } else {
-            $this->$defaultBlock = 'latest';
-        }
-        return $this;
-    }
-
    /**
     * getFunctions
-     *
+     * 
     * @return array
     */
    public function getFunctions()
@ -277,7 +236,7 @@ class Contract

    /**
     * getEvents
-     *
+     * 
     * @return array
     */
    public function getEvents()
@ -295,7 +254,7 @@ class Contract

    /**
     * getConstructor
-     *
+     * 
     * @return array
     */
    public function getConstructor()
@ -305,7 +264,7 @@ class Contract

    /**
     * getAbi
-     *
+     * 
     * @return array
     */
    public function getAbi()
@ -576,7 +535,7 @@ class Contract
    /**
     * call
     * Call function method.
-     *
+     * 
     * @param mixed
     * @return void
     */
@ -604,17 +563,47 @@ class Contract
                throw new \InvalidArgumentException('The last param must be callback function.');
            }

-            // check the arguments
+            // check the last one in arguments is transaction object
            $argsLen = count($arguments);
            $transaction = [];
-            $defaultBlock = $this->defaultBlock;
+            $hasTransaction = false;
+
+            if ($argsLen > 0) {
+                $transaction = $arguments[$argsLen - 1];
+            }
+            if (
+                isset($transaction["from"]) ||
+                isset($transaction["to"]) ||
+                isset($transaction["gas"]) ||
+                isset($transaction["gasPrice"]) ||
+                isset($transaction["value"]) ||
+                isset($transaction["data"]) ||
+                isset($transaction["nonce"])
+            ) {
+                $hasTransaction = true;
+            } else {
+                $transaction = [];
+            }
+
            $params = [];
            $data = "";
            $functionName = "";
            foreach ($functions as $function) {
+                if ($hasTransaction) {
+                    if ($argsLen - 1 !== count($function['inputs'])) {
+                        continue;
+                    } else {
+                        $paramsLen = $argsLen - 1;
+                    }
+                } else {
+                    if ($argsLen !== count($function['inputs'])) {
+                        continue;
+                    } else {
+                        $paramsLen = $argsLen;
+                    }
+                }
                try {
-                    $paramsLen = count($function['inputs']);
-                    $params = array_slice($arguments, 0, $paramsLen);
+                    $params = array_splice($arguments, 0, $paramsLen);
                    $data = $this->ethabi->encodeParameters($function, $params);
                    $functionName = Utils::jsonMethodToString($function);
                } catch (InvalidArgumentException $e) {
@ -625,40 +614,11 @@ class Contract
            if (empty($data) || empty($functionName)) {
                throw new InvalidArgumentException('Please make sure you have put all function params and callback.');
            }
-            // remove arguments
-            array_splice($arguments, 0, $paramsLen);
-            $argsLen -= $paramsLen;
-
-            if ($argsLen > 1) {
-                $defaultBlock = $arguments[$argsLen - 1];
-                $transaction = $arguments[$argsLen - 2];
-            } else if ($argsLen > 0) {
-                if (is_array($arguments[$argsLen - 1])) {
-                    $transaction = $arguments[$argsLen - 1];
-                } else {
-                    $defaultBlock = $arguments[$argsLen - 1];
-                }
-            }
-            if (!TagValidator::validate($defaultBlock) && !QuantityValidator::validate($defaultBlock)) {
-                $defaultBlock = $this->defaultBlock;
-            }
-            if (
-                !is_array($transaction) &&
-                !isset($transaction["from"]) &&
-                !isset($transaction["to"]) &&
-                !isset($transaction["gas"]) &&
-                !isset($transaction["gasPrice"]) &&
-                !isset($transaction["value"]) &&
-                !isset($transaction["data"]) &&
-                !isset($transaction["nonce"])
-            ) {
-                $transaction = [];
-            }
            $functionSignature = $this->ethabi->encodeFunctionSignature($functionName);
            $transaction['to'] = $this->toAddress;
            $transaction['data'] = $functionSignature . Utils::stripZero($data);

-            $this->eth->call($transaction, $defaultBlock, function ($err, $transaction) use ($callback, $function){
+            $this->eth->call($transaction, function ($err, $transaction) use ($callback, $function){
                if ($err !== null) {
                    return call_user_func($callback, $err, null);
                }
@ -778,7 +738,7 @@ class Contract
                $transaction['data'] = $functionSignature . Utils::stripZero($data);
            }

-            $this->eth->estimateGas($transaction, function ($err, $gas) use ($callback) {
+            $this->eth->estimateGas($transaction, function ($err, $gas) use ($callback){
                if ($err !== null) {
                    return call_user_func($callback, $err, null);
                }
--- a/src/Methods/Eth/NewBlockFilter.php
+++ b/src/Methods/Eth/NewBlockFilter.php
@ -23,14 +23,18 @@ class NewBlockFilter extends EthMethod
     * 
     * @var array
     */
-    protected $validators = [];
+    protected $validators = [
+        QuantityValidator::class
+    ];

    /**
     * inputFormatters
     * 
     * @var array
     */
-    protected $inputFormatters = [];
+    protected $inputFormatters = [
+        QuantityFormatter::class
+    ];

    /**
     * outputFormatters
@ -57,4 +61,4 @@ class NewBlockFilter extends EthMethod
    // {
    //     parent::__construct($method, $arguments);
    // }
-}
+}
--- a/src/Methods/EthMethod.php
+++ b/src/Methods/EthMethod.php
@ -118,11 +118,13 @@ class EthMethod extends JSONRPC implements IMethod
                        }
                    }
                    if ($isError) {
-                        throw new RuntimeException('Wrong type of ' . $this->method . ' method argument ' . $key . '.');
+                        $verifyMessage = call_user_func([$subRule, 'getVerifyMessage']);
+                        throw new RuntimeException('Wrong type of ' . $this->method . ' method argument ' . $key . ', message: ' . $verifyMessage . '.');
                    }
                } else {
                    if (call_user_func([$rule, 'validate'], $params[$key]) === false) {
-                        throw new RuntimeException('Wrong type of ' . $this->method . ' method argument ' . $key . '.');
+                        $verifyMessage = call_user_func([$rule, 'getVerifyMessage']);
+                        throw new RuntimeException('Wrong type of ' . $this->method . ' method argument ' . $key . ', message: ' . $verifyMessage . '.');
                    }
                }
            } else {
--- a/src/Utils.php
+++ b/src/Utils.php
@ -189,7 +189,7 @@ class Utils

    /**
     * isAddressChecksum
-     *
+     * 
     * @param string $value
     * @return bool
     */
@ -212,31 +212,6 @@ class Utils
        return true;
    }

-    /**
-     * toChecksumAddress
-     *
-     * @param string $value
-     * @return string
-     */
-    public static function toChecksumAddress($value)
-    {
-        if (!is_string($value)) {
-            throw new InvalidArgumentException('The value to toChecksumAddress function must be string.');
-        }
-        $value = self::stripZero(strtolower($value));
-        $hash = self::stripZero(self::sha3($value));
-        $ret = '0x';
-
-        for ($i = 0; $i < 40; $i++) {
-            if (intval($hash[$i], 16) >= 8) {
-                $ret .= strtoupper($value[$i]);
-            } else {
-                $ret .= $value[$i];
-            }
-        }
-        return $ret;
-    }
-
    /**
     * isHex
     * 
@ -529,7 +504,7 @@ class Utils
                $number = str_replace('-', '', $number, $count);
                $negative1 = new BigNumber(-1);
            }
-            if (self::isZeroPrefixed($number) || preg_match('/^[0-9a-f]+$/i', $number) === 1) {
+            if (self::isZeroPrefixed($number) || preg_match('/[a-f]+/', $number) === 1) {
                $number = self::stripZero($number);
                $bn = new BigNumber($number, 16);
            } elseif (empty($number)) {
--- a/src/Validators/AddressValidator.php
+++ b/src/Validators/AddressValidator.php
@ -12,8 +12,9 @@
 namespace Web3\Validators;

 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;

-class AddressValidator
+class AddressValidator extends Validator implements IValidator
 {
    /**
     * validate
--- a/src/Validators/BlockHashValidator.php
+++ b/src/Validators/BlockHashValidator.php
@ -12,8 +12,9 @@
 namespace Web3\Validators;

 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;

-class BlockHashValidator
+class BlockHashValidator extends Validator implements IValidator
 {
    /**
     * validate
--- a/src/Validators/BooleanValidator.php
+++ b/src/Validators/BooleanValidator.php
@ -12,8 +12,9 @@
 namespace Web3\Validators;

 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;

-class BooleanValidator
+class BooleanValidator extends Validator implements IValidator
 {
    /**
     * validate
--- a/src/Validators/CallValidator.php
+++ b/src/Validators/CallValidator.php
@ -12,11 +12,12 @@
 namespace Web3\Validators;

 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 use Web3\Validators\QuantityValidator;
 use Web3\Validators\TagValidator;
 use Web3\Validators\HexValidator;

-class CallValidator
+class CallValidator extends Validator implements IValidator
 {
    /**
     * validate
@ -27,30 +28,39 @@ class CallValidator
    public static function validate($value)
    {
        if (!is_array($value)) {
+            self::$verifyMessage = 'call must be array';
            return false;
        }
        if (isset($value['from']) && AddressValidator::validate($value['from']) === false) {
+            self::$verifyMessage = 'from is not valid';
            return false;
        }
        if (!isset($value['to'])) {
+            self::$verifyMessage = 'to is required';
            return false;
        }
        if (AddressValidator::validate($value['to']) === false) {
+            self::$verifyMessage = 'to is not valid';
            return false;
        }
        if (isset($value['gas']) && QuantityValidator::validate($value['gas']) === false) {
+            self::$verifyMessage = 'gas is not valid';
            return false;
        }
        if (isset($value['gasPrice']) && QuantityValidator::validate($value['gasPrice']) === false) {
+            self::$verifyMessage = 'gasPrice is not valid';
            return false;
        }
        if (isset($value['value']) && QuantityValidator::validate($value['value']) === false) {
+            self::$verifyMessage = 'value is not valid';
            return false;
        }
        if (isset($value['data']) && HexValidator::validate($value['data']) === false) {
+            self::$verifyMessage = 'data is not valid';
            return false;
        }
        if (isset($value['nonce']) && QuantityValidator::validate($value['nonce']) === false) {
+            self::$verifyMessage = 'nonce is not valid';
            return false;
        }
        return true;
--- a/src/Validators/FilterValidator.php
+++ b/src/Validators/FilterValidator.php
@ -12,12 +12,13 @@
 namespace Web3\Validators;

 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 use Web3\Validators\QuantityValidator;
 use Web3\Validators\TagValidator;
 use Web3\Validators\HexValidator;
 use Web3\Validators\AddressValidator;

-class FilterValidator
+class FilterValidator extends Validator implements IValidator
 {
    /**
     * validate
@ -28,6 +29,7 @@ class FilterValidator
    public static function validate($value)
    {
        if (!is_array($value)) {
+            self::$verifyMessage = 'filter must be array';
            return false;
        }
        if (
@ -35,6 +37,7 @@ class FilterValidator
            QuantityValidator::validate($value['fromBlock']) === false &&
            TagValidator::validate($value['fromBlock']) === false
            ) {
+            self::$verifyMessage = 'fromBlock is not valid';
            return false;
        }
        if (
@ -42,16 +45,19 @@ class FilterValidator
            QuantityValidator::validate($value['toBlock']) === false &&
            TagValidator::validate($value['toBlock']) === false
            ) {
+            self::$verifyMessage = 'toBlock is not valid';
            return false;
        }
        if (isset($value['address'])) {
            if (is_array($value['address'])) {
                foreach ($value['address'] as $address) {
                    if (AddressValidator::validate($address) === false) {
+                        self::$verifyMessage = 'address is not valid';
                        return false;
                    }
                }
            } elseif (AddressValidator::validate($value['address']) === false) {
+                self::$verifyMessage = 'address is not valid';
                return false;
            }
        }
@ -60,11 +66,13 @@ class FilterValidator
                if (is_array($topic)) {
                    foreach ($topic as $v) {
                        if (isset($v) && HexValidator::validate($v) === false) {
+                            self::$verifyMessage = 'topics are not valid';
                            return false;
                        }
                    }
                } else {
                    if (isset($topic) && HexValidator::validate($topic) === false) {
+                        self::$verifyMessage = 'topics are not valid';
                        return false;
                    }
                }
--- a/src/Validators/HexValidator.php
+++ b/src/Validators/HexValidator.php
@ -12,8 +12,9 @@
 namespace Web3\Validators;

 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;

-class HexValidator
+class HexValidator extends Validator implements IValidator
 {
    /**
     * validate
--- a/src/Validators/IdentityValidator.php
+++ b/src/Validators/IdentityValidator.php
@ -12,8 +12,9 @@
 namespace Web3\Validators;

 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;

-class IdentityValidator
+class IdentityValidator extends Validator implements IValidator
 {
    /**
     * validate
--- a/src/Validators/NonceValidator.php
+++ b/src/Validators/NonceValidator.php
@ -12,8 +12,9 @@
 namespace Web3\Validators;

 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;

-class NonceValidator
+class NonceValidator extends Validator implements IValidator
 {
    /**
     * validate
--- a/src/Validators/PostValidator.php
+++ b/src/Validators/PostValidator.php
@ -12,11 +12,12 @@
 namespace Web3\Validators;

 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 use Web3\Validators\QuantityValidator;
 use Web3\Validators\HexValidator;
 use Web3\Validators\IdentityValidator;

-class PostValidator
+class PostValidator extends Validator implements IValidator
 {
    /**
     * validate
@ -27,38 +28,49 @@ class PostValidator
    public static function validate($value)
    {
        if (!is_array($value)) {
+            self::$verifyMessage = 'post must be array';
            return false;
        }
        if (isset($value['from']) && IdentityValidator::validate($value['from']) === false) {
+            self::$verifyMessage = 'from is not valid';
            return false;
        }
        if (isset($value['to']) && IdentityValidator::validate($value['to']) === false) {
+            self::$verifyMessage = 'to is not valid';
            return false;
        }
        if (!isset($value['topics']) || !is_array($value['topics'])) {
+            self::$verifyMessage = 'topics are not valid';
            return false;
        }
        foreach ($value['topics'] as $topic) {
            if (IdentityValidator::validate($topic) === false) {
+                self::$verifyMessage = 'topics are not valid';
                return false;
            }
        }
        if (!isset($value['payload'])) {
+            self::$verifyMessage = 'payload is required';
            return false;
        }
        if (HexValidator::validate($value['payload']) === false) {
+            self::$verifyMessage = 'payload is not valid';
            return false;
        }
        if (!isset($value['priority'])) {
+            self::$verifyMessage = 'priority is required';
            return false;
        }
        if (QuantityValidator::validate($value['priority']) === false) {
+            self::$verifyMessage = 'priority is not valid';
            return false;
        }
        if (!isset($value['ttl'])) {
+            self::$verifyMessage = 'ttl is required';
            return false;
        }
        if (isset($value['ttl']) && QuantityValidator::validate($value['ttl']) === false) {
+            self::$verifyMessage = 'ttl is not valid';
            return false;
        }
        return true;
--- a/src/Validators/QuantityValidator.php
+++ b/src/Validators/QuantityValidator.php
@ -12,8 +12,9 @@
 namespace Web3\Validators;

 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;

-class QuantityValidator
+class QuantityValidator extends Validator implements IValidator
 {
    /**
     * validate
--- a/src/Validators/ShhFilterValidator.php
+++ b/src/Validators/ShhFilterValidator.php
@ -12,11 +12,12 @@
 namespace Web3\Validators;

 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 use Web3\Validators\QuantityValidator;
 use Web3\Validators\HexValidator;
 use Web3\Validators\IdentityValidator;

-class ShhFilterValidator
+class ShhFilterValidator extends Validator implements IValidator
 {
    /**
     * validate
@ -27,18 +28,26 @@ class ShhFilterValidator
    public static function validate($value)
    {
        if (!is_array($value)) {
+            self::$verifyMessage = 'filter of shh must be array';
            return false;
        }
        if (isset($value['to']) && IdentityValidator::validate($value['to']) === false) {
+            self::$verifyMessage = 'to is not valid';
            return false;
        }
-        if (!isset($value['topics']) || !is_array($value['topics'])) {
+        if (!isset($value['topics'])) {
+            self::$verifyMessage = 'topics are required';
+            return false;
+        }
+        if (!is_array($value['topics'])) {
+            self::$verifyMessage = 'topics must be array';
            return false;
        }
        foreach ($value['topics'] as $topic) {
            if (is_array($topic)) {
                foreach ($topic as $subTopic) {
                    if (HexValidator::validate($subTopic) === false) {
+                        self::$verifyMessage = 'topics are not valid';
                        return false;
                    }
                }
@ -46,6 +55,7 @@ class ShhFilterValidator
            }
            if (HexValidator::validate($topic) === false) {
                if (!is_null($topic)) {
+                    self::$verifyMessage = 'topics are not valid';
                    return false;
                }
            }
--- a/src/Validators/StringValidator.php
+++ b/src/Validators/StringValidator.php
@ -12,8 +12,9 @@
 namespace Web3\Validators;

 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;

-class StringValidator
+class StringValidator extends Validator implements IValidator
 {
    /**
     * validate
--- a/src/Validators/TagValidator.php
+++ b/src/Validators/TagValidator.php
@ -12,9 +12,10 @@
 namespace Web3\Validators;

 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 use Web3\Utils;

-class TagValidator implements IValidator
+class TagValidator extends Validator implements IValidator
 {
    /**
     * validate
--- a/src/Validators/TransactionValidator.php
+++ b/src/Validators/TransactionValidator.php
@ -12,11 +12,12 @@
 namespace Web3\Validators;

 use Web3\Validators\IValidator;
+use Web3\Validators\Validator;
 use Web3\Validators\QuantityValidator;
 use Web3\Validators\TagValidator;
 use Web3\Validators\HexValidator;

-class TransactionValidator
+class TransactionValidator extends Validator implements IValidator
 {
    /**
     * validate
@ -29,36 +30,39 @@ class TransactionValidator
    public static function validate($value)
    {
        if (!is_array($value)) {
+            self::$verifyMessage = 'transaction must be array';
            return false;
        }
        if (!isset($value['from'])) {
+            self::$verifyMessage = 'from is required';
            return false;
        }
        if (AddressValidator::validate($value['from']) === false) {
+            self::$verifyMessage = 'from must be address';
            return false;
        }
        if (isset($value['to']) && AddressValidator::validate($value['to']) === false && $value['to'] !== '') {
+            self::$verifyMessage = 'to must be address';
            return false;
        }
        if (isset($value['gas']) && QuantityValidator::validate($value['gas']) === false) {
+            self::$verifyMessage = 'gas is not valid';
            return false;
        }
        if (isset($value['gasPrice']) && QuantityValidator::validate($value['gasPrice']) === false) {
+            self::$verifyMessage = 'gasPrice is not valid';
            return false;
        }
        if (isset($value['value']) && QuantityValidator::validate($value['value']) === false) {
+            self::$verifyMessage = 'value is not valid';
            return false;
        }
-        // if (!isset($value['data'])) {
-        //     return false;
-        // }
-        // if (HexValidator::validate($value['data']) === false) {
-        //     return false;
-        // }
        if (isset($value['data']) && HexValidator::validate($value['data']) === false) {
+            self::$verifyMessage = 'data is not valid';
            return false;
        }
        if (isset($value['nonce']) && QuantityValidator::validate($value['nonce']) === false) {
+            self::$verifyMessage = 'nonce is not valid';
            return false;
        }
        return true;
--- a/src/Validators/Validator.php
+++ b/src/Validators/Validator.php
@ -0,0 +1,68 @@
+<?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\Validators;
+
+use Web3\Validators\IValidator;
+
+class Validator
+{
+    /**
+     * verifyMessage
+     * verify result from calling validate function
+     * 
+     * @var string
+     */
+    protected static $verifyMessage;
+
+    /**
+     * get
+     * 
+     * @param string $name
+     * @return mixed
+     */
+    public function __get($name)
+    {
+        $method = 'get' . ucfirst($name);
+
+        if (method_exists($this, $method)) {
+            return call_user_func_array([$this, $method], []);
+        }
+        return false;
+    }
+
+    /**
+     * set
+     * 
+     * @param string $name
+     * @param mixed $value
+     * @return bool
+     */
+    public function __set($name, $value)
+    {
+        $method = 'set' . ucfirst($name);
+
+        if (method_exists($this, $method)) {
+            return call_user_func_array([$this, $method], [$value]);
+        }
+        return false;
+    }
+
+    /**
+     * getVerifyMessage
+     * 
+     * @return string
+     */
+    public static function getVerifyMessage()
+    {
+        return self::$verifyMessage;
+    }
+}
--- a/test/TestCase.php
+++ b/test/TestCase.php
@ -37,8 +37,10 @@ class TestCase extends BaseTestCase

    /**
     * setUp
+     * 
+     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        $web3 = new Web3($this->testHost);
        $this->web3 = $web3;
@ -53,6 +55,8 @@ class TestCase extends BaseTestCase

    /**
     * tearDown
+     * 
+     * @return void
     */
-    public function tearDown(): void {}
-}
+    public function tearDown() {}
+}
--- a/test/unit/AddressFormatterTest.php
+++ b/test/unit/AddressFormatterTest.php
@ -19,7 +19,7 @@ class AddressFormatterTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->formatter = new AddressFormatter;
--- a/test/unit/AddressTypeTest.php
+++ b/test/unit/AddressTypeTest.php
@ -47,7 +47,7 @@ class AddressTypeTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->solidityType = new Address;
--- a/test/unit/AddressValidatorTest.php
+++ b/test/unit/AddressValidatorTest.php
@ -19,7 +19,7 @@ class AddressValidatorTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->validator = new AddressValidator;
--- a/test/unit/BigNumberFormatterTest.php
+++ b/test/unit/BigNumberFormatterTest.php
@ -20,7 +20,7 @@ class BigNumberFormatterTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->formatter = new BigNumberFormatter;
--- a/test/unit/BlockHashValidatorTest.php
+++ b/test/unit/BlockHashValidatorTest.php
@ -19,7 +19,7 @@ class BlockHashValidatorTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->validator = new BlockHashValidator;
--- a/test/unit/BooleanFormatterTest.php
+++ b/test/unit/BooleanFormatterTest.php
@ -20,7 +20,7 @@ class BooleanFormatterTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->formatter = new BooleanFormatter;
--- a/test/unit/BooleanTypeTest.php
+++ b/test/unit/BooleanTypeTest.php
@ -47,7 +47,7 @@ class BooleanTypeTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->solidityType = new Boolean;
--- a/test/unit/BooleanValidatorTest.php
+++ b/test/unit/BooleanValidatorTest.php
@ -19,7 +19,7 @@ class BooleanValidatorTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->validator = new BooleanValidator;
--- a/test/unit/BytesTypeTest.php
+++ b/test/unit/BytesTypeTest.php
@ -53,7 +53,7 @@ class BytesTypeTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->solidityType = new Bytes;
--- a/test/unit/CallValidatorTest.php
+++ b/test/unit/CallValidatorTest.php
@ -19,7 +19,7 @@ class CallValidatorTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->validator = new CallValidator;
--- a/test/unit/ContractTest.php
+++ b/test/unit/ContractTest.php
@ -412,7 +412,7 @@ class ContractTest extends TestCase
     *
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();

@ -1134,7 +1134,7 @@ class ContractTest extends TestCase
        $contract->at($contractAddress);

        foreach ($functions as $function) {
-            $contract->call($function['name'], [], 'latest', function ($err, $res) use ($function) {
+            $contract->call($function['name'], function ($err, $res) use ($function) {
                if ($err !== null) {
                    echo 'Error when call ' . $function['name'] . '. Message: ' . $err->getMessage() . "\n";
                    return;
@ -1468,22 +1468,13 @@ class ContractTest extends TestCase
                    // $this->assertEquals($contract->ethabi->encodeEventSignature($contract->events['Say']), $topics[0]);
                    $this->assertEquals('0x' . IntegerFormatter::format($testNumber), $topics[1]);
                }
-                $blockNumber = Utils::toBn($transaction->blockNumber);
-                $contract->call('number', Utils::toHex($blockNumber, true), function ($err, $res) use ($testNumber) {
+                $contract->call('number', function ($err, $res) use ($testNumber) {
                    if ($err !== null) {
                        echo 'Error when call ' . $function['name'] . '. Message: ' . $err->getMessage() . "\n";
                        return;
                    }
                    $this->assertEquals((string) $testNumber, $res[0]->toString());
                });
-                $blockNumber = $blockNumber->subtract(Utils::toBn(1));
-                $contract->call('number', Utils::toHex($blockNumber, true), function ($err, $res) use ($testNumber) {
-                    if ($err !== null) {
-                        echo 'Error when call ' . $function['name'] . '. Message: ' . $err->getMessage() . "\n";
-                        return;
-                    }
-                    $this->assertEquals((string) $testNumber-1, $res[0]->toString());
-                });
            });
        });

--- a/test/unit/DynamicBytesTypeTest.php
+++ b/test/unit/DynamicBytesTypeTest.php
@ -53,7 +53,7 @@ class DynamicBytesTypeTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->solidityType = new DynamicBytes;
--- a/test/unit/EthApiTest.php
+++ b/test/unit/EthApiTest.php
@ -21,7 +21,7 @@ class EthApiTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();

@ -439,7 +439,7 @@ class EthApiTest extends TestCase
            if ($err !== null) {
                return $this->assertTrue($err !== null);
            }
-            // weird behavior, see https://github.com/web3p/web3.php/issues/16
+            // weired behavior, see https://github.com/sc0Vu/web3.php/issues/16
            $this->assertTrue($block !== null);
        });
    }
@ -629,7 +629,7 @@ class EthApiTest extends TestCase
    {
        $eth = $this->eth;

-        $eth->newBlockFilter(function ($err, $filter) {
+        $eth->newBlockFilter('0x01', function ($err, $filter) {
            if ($err !== null) {
                // infura banned us to new block filter
                return $this->assertTrue($err !== null);
--- a/test/unit/EthBatchTest.php
+++ b/test/unit/EthBatchTest.php
@ -20,7 +20,7 @@ class EthBatchTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();

--- a/test/unit/EthTest.php
+++ b/test/unit/EthTest.php
@ -23,7 +23,7 @@ class EthTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();

--- a/test/unit/EthabiTest.php
+++ b/test/unit/EthabiTest.php
@ -163,7 +163,7 @@ class EthabiTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        // Error: Using $this when not in object context
@ -298,7 +298,7 @@ class EthabiTest extends TestCase

    /**
     * testIssue71
-     * test 33 bytes and 128 bytes string, see: https://github.com/web3p/web3.php/issues/71
+     * test 33 bytes and 128 bytes string, see: https://github.com/sc0Vu/web3.php/issues/71
     * string generated from: https://www.lipsum.com/
     * 
     * @return void
--- a/test/unit/FilterValidatorTest.php
+++ b/test/unit/FilterValidatorTest.php
@ -19,7 +19,7 @@ class FilterValidatorTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->validator = new FilterValidator;
--- a/test/unit/HexFormatterTest.php
+++ b/test/unit/HexFormatterTest.php
@ -19,7 +19,7 @@ class HexFormatterTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->formatter = new HexFormatter;
--- a/test/unit/HexValidatorTest.php
+++ b/test/unit/HexValidatorTest.php
@ -19,7 +19,7 @@ class HexValidatorTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->validator = new HexValidator;
--- a/test/unit/IdentityValidatorTest.php
+++ b/test/unit/IdentityValidatorTest.php
@ -19,7 +19,7 @@ class IdentityValidatorTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->validator = new IdentityValidator;
--- a/test/unit/IntegerFormatterTest.php
+++ b/test/unit/IntegerFormatterTest.php
@ -19,7 +19,7 @@ class IntegerFormatterTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->formatter = new IntegerFormatter;
--- a/test/unit/IntegerTypeTest.php
+++ b/test/unit/IntegerTypeTest.php
@ -53,7 +53,7 @@ class IntegerTypeTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->solidityType = new Integer;
--- a/test/unit/NetApiTest.php
+++ b/test/unit/NetApiTest.php
@ -21,7 +21,7 @@ class NetApiTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();

--- a/test/unit/NetBatchTest.php
+++ b/test/unit/NetBatchTest.php
@ -20,7 +20,7 @@ class NetBatchTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();

--- a/test/unit/NetTest.php
+++ b/test/unit/NetTest.php
@ -23,7 +23,7 @@ class NetTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();

--- a/test/unit/NonceValidatorTest.php
+++ b/test/unit/NonceValidatorTest.php
@ -19,7 +19,7 @@ class NonceValidatorTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->validator = new NonceValidator;
--- a/test/unit/NumberFormatterTest.php
+++ b/test/unit/NumberFormatterTest.php
@ -19,7 +19,7 @@ class NumberFormatterTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->formatter = new NumberFormatter;
--- a/test/unit/OptionalQuantityFormatterTest.php
+++ b/test/unit/OptionalQuantityFormatterTest.php
@ -19,7 +19,7 @@ class OptionalQuantityFormatterTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->formatter = new OptionalQuantityFormatter;
@ -55,8 +55,6 @@ class OptionalQuantityFormatterTest extends TestCase
        $this->assertEquals('latest', $formatter->format('latest'));
        $this->assertEquals('earliest', $formatter->format('earliest'));
        $this->assertEquals('pending', $formatter->format('pending'));
-
-        $this->expectExceptionMessage('toBn number must be valid hex string.');
-        $formatter->format('hello');
+        $this->assertEquals('0x0', $formatter->format('hello'));
    }
 }
--- a/test/unit/PersonalApiTest.php
+++ b/test/unit/PersonalApiTest.php
@ -27,7 +27,7 @@ class PersonalApiTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();

--- a/test/unit/PersonalBatchTest.php
+++ b/test/unit/PersonalBatchTest.php
@ -19,7 +19,7 @@ class PersonalBatchTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();

--- a/test/unit/PersonalTest.php
+++ b/test/unit/PersonalTest.php
@ -23,7 +23,7 @@ class PersonalTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();

--- a/test/unit/PostFormatterTest.php
+++ b/test/unit/PostFormatterTest.php
@ -19,7 +19,7 @@ class PostFormatterTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->formatter = new PostFormatter;
--- a/test/unit/PostValidatorTest.php
+++ b/test/unit/PostValidatorTest.php
@ -19,7 +19,7 @@ class PostValidatorTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->validator = new PostValidator;
--- a/test/unit/QuantityFormatterTest.php
+++ b/test/unit/QuantityFormatterTest.php
@ -19,7 +19,7 @@ class QuantityFormatterTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->formatter = new QuantityFormatter;
--- a/test/unit/QuantityValidatorTest.php
+++ b/test/unit/QuantityValidatorTest.php
@ -19,7 +19,7 @@ class QuantityValidatorTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->validator = new QuantityValidator;
--- a/test/unit/ShhApiTest.php
+++ b/test/unit/ShhApiTest.php
@ -21,7 +21,7 @@ class ShhApiTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();

--- a/test/unit/ShhBatchTest.php
+++ b/test/unit/ShhBatchTest.php
@ -19,7 +19,7 @@ class ShhBatchTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();

--- a/test/unit/ShhFilterValidatorTest.php
+++ b/test/unit/ShhFilterValidatorTest.php
@ -19,7 +19,7 @@ class ShhFilterValidatorTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->validator = new ShhFilterValidator;
--- a/test/unit/ShhTest.php
+++ b/test/unit/ShhTest.php
@ -23,7 +23,7 @@ class ShhTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();

--- a/test/unit/SolidityTypeTest.php
+++ b/test/unit/SolidityTypeTest.php
@ -20,7 +20,7 @@ class SolidityTypeTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->type = new SolidityType();
--- a/test/unit/StrTypeTest.php
+++ b/test/unit/StrTypeTest.php
@ -47,7 +47,7 @@ class StrTypeTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->solidityType = new Str;
--- a/test/unit/StringFormatterTest.php
+++ b/test/unit/StringFormatterTest.php
@ -19,7 +19,7 @@ class StringFormatterTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->formatter = new StringFormatter;
--- a/test/unit/StringValidatorTest.php
+++ b/test/unit/StringValidatorTest.php
@ -19,7 +19,7 @@ class StringValidatorTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->validator = new StringValidator;
--- a/test/unit/TagValidatorTest.php
+++ b/test/unit/TagValidatorTest.php
@ -19,7 +19,7 @@ class TagValidatorTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->validator = new TagValidator;
--- a/test/unit/TransactionFormatterTest.php
+++ b/test/unit/TransactionFormatterTest.php
@ -19,7 +19,7 @@ class TransactionFormatterTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->formatter = new TransactionFormatter;
--- a/test/unit/TransactionValidatorTest.php
+++ b/test/unit/TransactionValidatorTest.php
@ -19,7 +19,7 @@ class TransactionValidatorTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->validator = new TransactionValidator;
--- a/test/unit/UintegerTypeTest.php
+++ b/test/unit/UintegerTypeTest.php
@ -53,7 +53,7 @@ class UintegerTypeTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
        $this->solidityType = new Uinteger;
--- a/test/unit/UtilsTest.php
+++ b/test/unit/UtilsTest.php
@ -55,7 +55,7 @@ class UtilsTest extends TestCase

    /**
     * testIssue112Json
-     * see: https://github.com/web3p/web3.php/issues/112
+     * see: https://github.com/sc0Vu/web3.php/issues/112
     * 
     * @var string
     */
@ -137,7 +137,7 @@ class UtilsTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
    }
@ -249,7 +249,7 @@ class UtilsTest extends TestCase

    /**
     * testIsAddressChecksum
-     *
+     * 
     * @return void
     */
    public function testIsAddressChecksum()
@ -291,36 +291,9 @@ class UtilsTest extends TestCase
        $isAddressChecksum = Utils::isAddressChecksum(new stdClass);
    }

-    /**
-     * testToChecksumAddress
-     *
-     * @return void
-     */
-    public function testToChecksumAddress()
-    {
-        $checksumAddressTest = [
-            // All caps
-            '0x52908400098527886E0F7030069857D2E4169EE7',
-            '0x8617E340B3D01FA5F11F306F4090FD50E238070D',
-            // All Lower
-            '0xde709f2102306220921060314715629080e2fb77',
-            '0x27b1fdb04752bbc536007a920d24acb045561c26',
-            // Normal
-            '0x5aAeb6053F3E94C9b9A09f33669435E7Ef1BeAed',
-            '0xfB6916095ca1df60bB79Ce92cE3Ea74c37c5d359',
-            '0xdbF03B407c01E7cD3CBea99509d93f8DDDC8C6FB',
-            '0xD1220A0cf47c7B9Be7A2E6BA89F429762e7b9aDb'
-        ];
-
-        for ($i=0; $i<count($checksumAddressTest); $i++) {
-            $checksumAddress = Utils::toChecksumAddress(strtolower($checksumAddressTest[$i]));
-            $this->assertEquals($checksumAddressTest[$i], $checksumAddress);
-        }
-    }
-
    /**
     * testStripZero
-     *
+     * 
     * @return void
     */
    public function testStripZero()
--- a/test/unit/Web3ApiTest.php
+++ b/test/unit/Web3ApiTest.php
@ -29,7 +29,7 @@ class Web3ApiTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
    }
--- a/test/unit/Web3BatchTest.php
+++ b/test/unit/Web3BatchTest.php
@ -28,7 +28,7 @@ class Web3BatchTest extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
    }
--- a/test/unit/Web3Test.php
+++ b/test/unit/Web3Test.php
@ -37,7 +37,7 @@ class Web3Test extends TestCase
     * 
     * @return void
     */
-    public function setUp(): void
+    public function setUp()
    {
        parent::setUp();
    }