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1 | <?php |
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2 | |||
3 | namespace Cocur\Chain\Link; |
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4 | |||
5 | /** |
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6 | * CountValues. |
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7 | * |
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8 | * @author Florian Eckerstorfer |
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9 | * @copyright 2015 Florian Eckerstorfer |
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10 | */ |
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11 | trait CountValues |
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12 | { |
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13 | /** |
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14 | * Counts all the values of the array. |
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15 | * |
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16 | * Returns an array using the values of the array as keys and their frequency as values. |
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17 | * |
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18 | * @return array An associative array of values from the array as keys and their count value. |
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19 | */ |
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20 | 1 | public function countValues() |
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21 | { |
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22 | 1 | return array_count_values($this->array); |
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23 | } |
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24 | } |
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25 |
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: