| 1 | <?php |
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| 10 | trait SessionTrait { |
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| 11 | |||
| 12 | /** @var bool */ |
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| 13 | protected $started; |
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| 14 | |||
| 15 | /** |
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| 16 | * Starts a session to be used by the driver client |
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| 17 | */ |
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| 18 | public function start() { |
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| 21 | |||
| 22 | /** |
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| 23 | * Tells if the session is started or not |
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| 24 | * @return bool |
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| 25 | */ |
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| 26 | public function isStarted() { |
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| 29 | |||
| 30 | /** |
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| 31 | * Stops the session completely, clean slate for the browser |
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| 32 | * @return bool |
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| 33 | */ |
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| 34 | public function stop() { |
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| 41 | |||
| 42 | /** |
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| 43 | * Clears the cookies in the browser, all of them |
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| 44 | * @return bool |
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| 45 | */ |
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| 46 | public function reset() { |
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| 51 | } |
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| 52 |
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.