1 | <?php |
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5 | trait CountTrait { |
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6 | /** |
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7 | * Binds to count() method. This is equal to make $this->tree->size(). |
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8 | * |
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9 | * @return integer the tree size. 0 if it is empty. |
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10 | */ |
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11 | public function count() { |
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14 | |||
15 | /** |
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16 | * Returns the array size. |
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17 | * |
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18 | * @return int the length |
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19 | */ |
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20 | public function size() : int { |
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23 | } |
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: