1 | <?php |
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10 | trait MutableTrait |
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11 | { |
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12 | /** |
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13 | * {@inheritdoc} |
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14 | * |
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15 | */ |
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16 | public function remove($item) |
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23 | |||
24 | |||
25 | /** |
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26 | * {@inheritdoc} |
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27 | * |
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28 | */ |
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29 | public function filter(callable $callable) |
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36 | |||
37 | |||
38 | /** |
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39 | * {@inheritdoc} |
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40 | * |
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41 | */ |
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42 | public function map(callable $callable) |
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49 | |||
50 | |||
51 | /** |
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52 | * {@inheritdoc} |
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53 | * |
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54 | */ |
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55 | public function diff(CollectionInterface ...$collection) |
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62 | |||
63 | |||
64 | /** |
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65 | * {@inheritdoc} |
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66 | * |
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67 | */ |
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68 | public function intersect(CollectionInterface ...$collection) |
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75 | |||
76 | |||
77 | /** |
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78 | * {@inheritdoc} |
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79 | * |
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80 | */ |
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81 | public function merge(CollectionInterface ...$collection) |
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88 | } |
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89 |
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: