Add test case.

.gitignore

@@ -0,0 +1,3 @@
+.DS_Store
+vendor/*
+composer.lock

README.md

@@ -23,13 +23,13 @@ Array enum provides the definition and use of key-value enums in the form of arr
 If you use it as a unified error code return, it should look something like this
 
     /**
-     * @method static ErrorCodeEnum OK
+     * @method static self OK
      *
-     * @method static CodeEnum UNKNOWN_ERROR
+     * @method static self UNKNOWN_ERROR
      *
-     * @method static ErrorCodeEnum ERROR_DATA_VALIDATION
-     * @method static ErrorCodeEnum ERROR_USER_INVALID
-     * @method static ErrorCodeEnum ERROR_CONFIG_ERROR
+     * @method static self ERROR_DATA_VALIDATION
+     * @method static self ERROR_USER_INVALID
+     * @method static self ERROR_CONFIG_ERROR
      */
     class ErrorCodeEnum extends \PhpEnum\ArrayEnum
     {
@@ -88,18 +88,18 @@ You can do this when you encounter an exception that returns the expected result
 If you use it as enumeration, it should look something like this
 
     /**
-     * @method static ArticleEnum TYPE_ARTICLE
-     * @method static ArticleEnum TYPE_STORY
-     * @method static ArticleEnum TYPE_NEWS
+     * @method static self TYPE_ARTICLE
+     * @method static self TYPE_STORY
+     * @method static self TYPE_NEWS
      *
-     * @method static ArticleEnum SHARE_PRIVATE
-     * @method static ArticleEnum SHARE_PROTECTED
-     * @method static ArticleEnum SHARE_PUBLIC
+     * @method static self SHARE_PRIVATE
+     * @method static self SHARE_PROTECTED
+     * @method static self SHARE_PUBLIC
      *
-     * @method static ArticleEnum STATUS_NORMAL
-     * @method static ArticleEnum STATUE_AUDIT
-     * @method static ArticleEnum STATUE_INACTIVE
-     * @method static ArticleEnum STATUS_INVALID
+     * @method static self STATUS_NORMAL
+     * @method static self STATUS_AUDIT
+     * @method static self STATUS_INACTIVE
+     * @method static self STATUS_INVALID
      */
     class ArticleEnum extends \PhpEnum\ArrayEnum
     {

README_CN.md

@@ -0,0 +1,28 @@
+阅读此文档时，假设您已经了解了枚举的基础知识。如果没有，请先查阅相关文档。
+
+枚举在每个项目都可能会被用到，只是定义和使用的方式大有不同，在php中大多数枚举是以常量或静态变量的形式存在的
+
+PHP通过SPL类库为我们提供了枚举类SplEnum，但遗憾的是，首先它提供的方法需要再次进行封装才能满足一些需求，其次它需要以扩展的方式安装才能进行使用。
+
+由此，许多优秀的开发人员提供了许多功能强大的枚举类库，而此枚举类库提供了更严谨的使用方式。
+
+规范：
+
+1. 在定义枚举时应该使用const关键字进行声明，而枚举名称需要全部大写
+2. 在定义枚举值时，所有枚举值的类型和长度应该一致
+3. 一组枚举命名应该使用统一前缀
+4. 定义枚举时同时也应该定义枚举对应的注释
+
+例：
+
+	/**
+	 * @method static StatusEnum STATUS_NORMAL
+	 * @method static StatusEnum STATUS_INVALID
+	 */
+	class StatusEnum extends \PhpEnum\ArrayEnum
+	{
+	    const STATUS_NORMAL = ['1', 'normal'];
+	    const STATUS_INVALID = ['9', 'invalid'];
+	}
+
+当枚举属性值为null或者未定义枚举属性时 都会返回null，但是如果常量未定义，会产生一个 E_WARNING 级别的错误。在php7以上版本会抛出一个ErrorException异常

phpunit.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    phpunit -c phpunit.xml
+-->
+<phpunit backupGlobals="false"
+         backupStaticAttributes="false"
+         colors="true"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="true"
+         convertWarningsToExceptions="true"
+         processIsolation="false"
+         stopOnFailure="false">
+    <testsuites>
+        <testsuite name="PHP Enum Test Suite">
+            <directory suffix=".php">./tests</directory>
+        </testsuite>
+    </testsuites>
+</phpunit>

src/ArrayEnum.php

@@ -7,9 +7,8 @@
  *
  * @author yinfuyuan <[email protected]>
  * @link https://github.com/yinfuyuan/php-enum
- * @license https://opensource.org/licenses/GPL-3.0
  */
-abstract class ArrayEnum extends Enum
+abstract class ArrayEnum extends ListEnum
 {
 
     /**
@@ -24,86 +23,53 @@ abstract class ArrayEnum extends Enum
      *
      * @var mixed $key
      */
-    private $key;
+    protected $enum_key;
 
     /**
      * The enum value.
      *
      * @var mixed $value
      */
-    private $value;
-
-    /**
-     * Create a new array enum instance.
-     *
-     * @param array $attributes
-     * @return void
-     *
-     * @throws \InvalidArgumentException
-     * @throws \LengthException
-     */
-    public function __construct($attributes)
-    {
-        parent::__construct($attributes);
-        $this->key = reset($attributes);
-        $this->value = end($attributes);
-    }
+    protected $enum_value;
 
     /**
      * Get the enum key.
      *
      * @return mixed
      */
-    public function getKey()
+    public function getEnumKey()
     {
-        return $this->key;
+        return parent::getKey();
     }
 
     /**
      * Get the enum value.
      *
      * @return mixed
      */
-    public function getValue()
-    {
-        return $this->value;
-    }
-
-    /**
-     * Compare the keys to be equal.
-     *
-     * @param mixed $key
-     * @return bool
-     */
-    public function keyEquals($key)
+    public function getEnumValue()
     {
-        return $this->getKey() == $key;
+        return parent::getValue();
     }
 
     /**
-     * Compare the values to be equal.
+     * Get the enum key.
      *
-     * @param mixed $value
-     * @return bool
+     * @return mixed
      */
-    public function valueEquals($value)
+    public function getKey()
     {
-        return $this->getValue() == $value;
+        return $this->enum_key;
     }
 
     /**
-     * Get the array enum all keys.
+     * Get the enum value.
      *
-     * @param string $prefix
-     * @return array
+     * @return mixed
      */
-    public static function getKeys($prefix = '')
+    public function getValue()
     {
-
-        $values = self::getValues($prefix);
-
-        return array_keys($values);
-
+        return $this->enum_value;
     }
 
     /**
@@ -132,102 +98,13 @@ public static function getValues($prefix = '')
     }
 
     /**
-     * Determine if the key exists.
-     *
-     * @param mixed $key
-     * @param string $prefix
-     * @return bool
-     */
-    public static function keyExist($key, $prefix = '')
-    {
-
-        $values = self::getValues($prefix);
-
-        if(empty($values[$key])) {
-            return false;
-        }
-
-        return true;
-
-    }
-
-    /**
-     * Determine if the value exists.
-     *
-     * @param mixed $value
-     * @param string $prefix
-     * @return bool
-     */
-    public static function valueExist($value, $prefix = '')
-    {
-
-        $values = self::getValues($prefix);
-
-        $key = array_search($value, $values);
-
-        if(false === $key) {
-            return false;
-        }
-
-        return true;
-
-    }
-
-    /**
-     * Search the key based on the value.
-     *
-     * @param mixed $value
-     * @param string $prefix
-     * @return mixed|null
-     */
-    public static function searchKey($value, $prefix = '')
-    {
-
-        $values = self::getValues($prefix);
-
-        $key = array_search($value, $values);
-
-        if(false === $key) {
-            return null;
-        }
-
-        return $key;
-
-    }
-
-    /**
-     * Search the value based on the key.
-     *
-     * @param mixed $key
-     * @param string $prefix
-     * @return mixed|null
-     */
-    public static function searchValue($key, $prefix = '')
-    {
-
-        $values = self::getValues($prefix);
-
-        if(empty($values[$key])) {
-            return null;
-        }
-
-        return $values[$key];
-
-    }
-
-    /**
-     * Get enum size.
+     * Get enum attribute length.
      *
-     * @param string $prefix
      * @return int
      */
-    public static function getSize($prefix = '')
+    public static function getLength()
     {
-
-        $values = self::getValues($prefix);
-
-        return count($values);
-
+        return self::$ENUM_LENGTH;
     }
 
 }