| 1 | <?php |
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| 10 | trait Query { |
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| 11 | /** |
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| 12 | * Query array, similar to `$_GET` |
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| 13 | * |
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| 14 | * @var array |
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| 15 | */ |
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| 16 | public $query; |
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| 17 | /** |
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| 18 | * @param array $query Typically `$_GET` |
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| 19 | */ |
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| 20 | 28 | public function init_query ($query = []) { |
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| 23 | /** |
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| 24 | * Get query parameter by name |
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| 25 | * |
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| 26 | * @param string[]|string[][] $name |
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| 27 | * |
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| 28 | * @return mixed|mixed[]|null Query parameter (or associative array of Query parameters) if exists or `null` otherwise (in case if `$name` is an array |
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| 29 | * even one missing key will cause the whole thing to fail) |
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| 30 | */ |
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| 31 | 2 | public function query (...$name) { |
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| 34 | } |
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| 35 |
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.