| 1 | <?php |
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| 7 | trait VisibleCondition |
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| 8 | { |
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| 9 | /** |
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| 10 | * @var Closure|null |
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| 11 | */ |
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| 12 | protected $visibleCondition; |
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| 13 | |||
| 14 | /** |
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| 15 | * @return bool |
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| 16 | */ |
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| 17 | public function isVisible() |
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| 25 | |||
| 26 | /** |
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| 27 | * @param Closure $condition |
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| 28 | * |
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| 29 | * @return $this |
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| 30 | */ |
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| 31 | public function setVisibilityCondition(Closure $condition) |
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| 37 | } |
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| 38 |
This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idableprovides a methodequalsIdthat in turn relies on the methodgetId(). If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()as an abstract method to the trait will make sure it is available.