Add TraitUtils::contain and is_contain_trait

.gitignore

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+# phpstorm project files
+.idea
+
+# netbeans project files
+nbproject
+
+# zend studio for eclipse project files
+.buildpath
+.project
+.settings
+
+# windows thumbnail cache
+Thumbs.db
+
+# composer vendor dir
+/vendor
+
+# composer itself is not needed
+/composer.phar
+
+# Mac DS_Store Files
+.DS_Store
+
+# phpunit itself is not needed
+phpunit.phar
+# local phpunit config
+/phpunit.xml

CHANGELOG.md

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+# Changelog
+
+All Notable changes to `trait-utils` will be documented in this file.
+
+## 1.0.0 - 2015-09-15
+
+- Initial release
+- Add TraitUtils::contain and is_contain_trait

CONTRIBUTING.md

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+# Contributing
+
+Contributions are **welcome** and will be fully **credited**.
+
+We accept contributions via Pull Requests on [Github](https://github.com/vladdnepr/trait-utils).
+
+
+## Pull Requests
+
+- **[PSR-2 Coding Standard](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md)** - The easiest way to apply the conventions is to install [PHP Code Sniffer](http://pear.php.net/package/PHP_CodeSniffer).
+
+- **Add tests!** - Your patch won't be accepted if it doesn't have tests.
+
+- **Document any change in behaviour** - Make sure the `README.md` and any other relevant documentation are kept up-to-date.
+
+- **Consider our release cycle** - We try to follow [SemVer v2.0.0](http://semver.org/). Randomly breaking public APIs is not an option.
+
+- **Create feature branches** - Don't ask us to pull from your master branch.
+
+- **One pull request per feature** - If you want to do more than one thing, send multiple pull requests.
+
+- **Send coherent history** - Make sure each individual commit in your pull request is meaningful. If you had to make multiple intermediate commits while developing, please squash them before submitting.
+
+
+## Running Tests
+
+``` bash
+$ phpunit
+```
+
+
+**Happy coding**!

LICENSE.md

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+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org>
+

README.md

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+# PHP Trait Contain
+
+PHP Trait Utilities - contain PHP trait utilities
+
+For example - check class contain some trait with check parent classes
+
+- [Github Project](https://github.com/vladdnepr/trait-utils)
+
+## Installation
+
+If you do not have [Composer](http://getcomposer.org/), you may install it by following the instructions
+at [getcomposer.org](http://getcomposer.org/doc/00-intro.md#installation-nix).
+
+You can then install this package using the following command:
+
+```php
+php composer.phar require "vladdnepr/trait-utils" "*"
+```
+or add
+
+```json
+"vladdnepr/trait-utils": "*"
+```
+
+to the require section of your application's `composer.json` file.
+
+## Contributing
+
+Please see [CONTRIBUTING](CONTRIBUTING.md) for details.
+
+## Credits
+
+- [Vladislav Lyshenko](https://github.com/vladdnepr)
+- [All Contributors](../../contributors)
+
+## License
+
+Public domain. Please see [License File](LICENSE.md) for more information.

composer.json

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+{
+    "name": "vladdnepr/trait-utils",
+    "description": "PHP Trait Utilities",
+    "keywords": ["php", "trait", "contain", "instanceof", "utils", "utilities"],
+    "homepage": "https://github.com/vladdnepr/trait-utils",
+    "license": "public domain",
+    "authors": [
+        {
+            "name": "Vladislav Lyshenko",
+            "email": "vladdnepr1989@gmail.com"
+        }
+    ],
+    "support": {
+        "issues": "https://github.com/vladdnepr/trait-utils/issues?state=open",
+        "source": "https://github.com/vladdnepr/trait-utils"
+    },
+    "require": {
+        "php": ">=5.4.0"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "~4.5"
+    },
+    "autoload": {
+        "psr-4": {
+            "VladDnepr\\TraitUtils\\": "src"
+        }
+    }
+}

src/TraitUtils.php

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+<?php
+
+namespace VladDnepr\TraitUtils;
+
+class TraitUtils
+{
+    /**
+     * Cache results of contain method
+     * @var array
+     */
+    protected static $cache = [];
+
+    /**
+     * Return is the trait used by the given class or object
+     *
+     * @param mixed $object The tested object or class name
+     * @param string $trait_class Trait name
+     * @return bool
+     */
+    public static function contain($object, $trait_class)
+    {
+        $cache_key = md5((is_object($object) ? get_class($object) : $object) . $trait_class);
+
+        if (!isset(self::$cache[$cache_key])) {
+            $traits = [];
+
+            do {
+                $traits = array_merge($traits, class_uses($object));
+            } while ($object = get_parent_class($object));
+
+            self::$cache[$cache_key] = isset($traits[$trait_class]);
+        }
+
+        return self::$cache[$cache_key];
+    }
+}
+
+/**
+ * @see TraitContain::contain()
+ */
+function is_contain_trait($object, $trait_class)
+{
+    return TraitUtils::contain($object, $trait_class);
+}