Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
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| 3 | class UserAgentTest extends PHPUnit_Framework_TestCase  | 
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| 5 | protected $CrawlerDetect;  | 
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| 7 | public function setUp()  | 
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| 12 | View Code Duplication | public function testBots()  | 
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| 22 | View Code Duplication | public function testDevices()  | 
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You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.