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:
1 | <?php |
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16 | class GH6402Test extends OrmFunctionalTestCase |
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17 | { |
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18 | protected function setUp() |
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19 | { |
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20 | $this->useModelSet('quote'); |
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21 | |||
22 | parent::setUp(); |
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23 | } |
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24 | |||
25 | public function testFind() |
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26 | { |
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27 | $id = $this->createAddress(); |
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28 | |||
29 | $address = $this->_em->find(Address::class, $id); |
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30 | self::assertNotNull($address->user); |
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31 | } |
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32 | |||
33 | View Code Duplication | public function testQuery() |
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34 | { |
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35 | $id = $this->createAddress(); |
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36 | |||
37 | $addresses = $this->_em->createQuery('SELECT a FROM ' . Address::class . ' a WHERE a.id = :id') |
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38 | ->setParameter('id', $id) |
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39 | ->getResult(); |
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40 | |||
41 | self::assertCount(1, $addresses); |
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42 | self::assertNotNull($addresses[0]->user); |
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43 | } |
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44 | |||
45 | public function testFindWithSubClass() |
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52 | |||
53 | View Code Duplication | public function testQueryWithSubClass() |
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54 | { |
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55 | $id = $this->createFullAddress(); |
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56 | |||
57 | $addresses = $this->_em->createQuery('SELECT a FROM ' . FullAddress::class . ' a WHERE a.id = :id') |
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58 | ->setParameter('id', $id) |
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59 | ->getResult(); |
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60 | |||
61 | self::assertCount(1, $addresses); |
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62 | self::assertNotNull($addresses[0]->user); |
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63 | } |
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64 | |||
65 | private function createAddress() |
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66 | { |
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67 | $address = new Address(); |
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68 | $address->zip = 'bar'; |
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69 | |||
70 | $this->persistAddress($address); |
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71 | |||
72 | return $address->id; |
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73 | } |
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74 | |||
75 | private function createFullAddress() |
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85 | |||
86 | private function persistAddress(Address $address) |
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96 | } |
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97 |
Let’s assume that you have a directory layout like this:
and let’s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: