Predefined Interfacesを使って便利な独自クラスを作りましょう

PHPerKaigi 2022 LT

Transcript

1. Copyright© M&A
   Predefined Interfaces
   PHPerKaigi
   202 2
   LT
   

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2. Copyright© M&A
   2
   

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3. Copyright© M&A
   3
   M&A CTO
   
   
   M&A
   6 🙏
   

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4. Copyright© M&A
   4
   Web Laravel
   3/28 Laravel
   Queue
   

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5. Copyright© M&A
   5
   

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6. Copyright© M&A
   6
   Predefined Interfaces
   Interface
   Interface
   
   
   class interface
   interface A {
   
   
   public function a();
   
   
   }
   

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7. Copyright© M&A
   7
   Predefined Interfaces
   Interface
   Interface
   Iterable
   Cacheable Renderable
   interface Speakable {
   
   
   // Ͳ͏஻ΕΔ͔͸෼͔Βͳ͍͕஻ΕΔ
   
   
   public function speak();
   
   
   }
   

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8. Copyright© M&A
   8
   Predefined Interfaces
   Interface
   interface Speakable {
   
   
   // Ͳ͏஻ΕΔ͔͸෼͔Βͳ͍͕஻ΕΔ
   
   
   public function speak();
   
   
   }
   class Japanese implements Speakable {
   
   
   public function speak()
   
   
   {
   
   
   echo "͜Μʹͪ͸";
   
   
   }
   
   
   }
   
   
   class American implements Speakable {
   
   
   public function speak()
   
   
   {
   
   
   echo "Hello";
   
   
   }
   
   
   }
   
   
   Interface
   

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9. Copyright© M&A
   9
   Predefined Interfaces
   Predefined Interfaces
   PHP PHP
   PHP
   

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10. Copyright© M&A
    10
    Predefined Interfaces
    Predefined Interfaces
    Traversable Interface foreach
    Throwable Throwable throw
    Error Exception
    Stringable Interface
    print echo
    

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11. Copyright© M&A
    11
    Predefined Interfaces
    PHP
    Traversable
    
    
    Iterator
    
    
    IterotorAggregate
    
    
    Throwable
    
    
    ArrayAccess
    
    
    Countable
    
    
    Stringable
    

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12. Copyright© M&A
    12
    Predefined Interfaces
    Predefined Interface
    Stringable(PHP
    8
    )
    
    
    (__toString() )
    class Book implements Stringable {
    
    
    public function __construct(private string $name, private int $price, private bool $isNew = false)
    
    
    {}
    
    
    public function __toString()
    
    
    {
    
    
    return $this->name . " : " . $this->price . "ԁ" . ($this->isNew ? " ৽ൃച" : "");
    
    
    }
    
    
    }
    
    
    echo new Book(name: 'ϓϩϑΣογϣφϧWebϓϩάϥϛϯά Laravelʪ࠷৽Laravel 9ରԠʫ', price: 3520, isNew: true);
    ~/Project/predefined-interface
    
    
    ▶ php iterator.php
    
    
    ϓϩϑΣογϣφϧWebϓϩάϥϛϯά Laravelʪ࠷৽Laravel 9ରԠʫ : 3520ԁ ৽ൃച
    

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13. Copyright© M&A
    13
    Predefined Interfaces
    Predefined Interface
    Iterator Traversal foreach
    
    
    Iterator Traversal
    class BookShelf implements Iterator {
    
    
    private int $position = 0;
    
    
    public function __construct(private array $books)
    
    
    {}
    
    
    public function current()
    
    
    {
    
    
    return $this->books[$this->position];
    
    
    }
    
    
    public function next()
    
    
    {
    
    
    ++$this->position;
    
    
    }
    public function key()
    
    
    {
    
    
    return $this->position;
    
    
    }
    
    
    public function valid()
    
    
    {
    
    
    return isset($this->books[$this->position]);
    
    
    }
    
    
    public function rewind()
    
    
    {
    
    
    $this->position = 0;
    
    
    }
    
    
    }
    
    
    

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14. Copyright© M&A
    14
    Predefined Interfaces
    Predefined Interface
    Iterator Traversal foreach
    $books = [
    
    
    new Book(name: 'PHPϑϨʔϜϫʔΫ Laravel WebΞϓϦέʔγϣϯ։ൃ όʔδϣϯ5.5 LTSରԠ', price: 4180),
    
    
    new Book(name: 'ΈΜͳͷPHPɹݱ৔Ͱ໾ཱͭ࠷৽ϊ΢ϋ΢ʂ', price: 2398)
    
    
    ];
    
    
    $boolShelf = new BookShelf($books);
    
    
    foreach ($boolShelf as $book) {
    
    
    print($book);
    
    
    print("\n");
    
    
    }
    ~/Project/predefined-interface
    
    
    ▶ php iterator.php
    
    
    PHPϑϨʔϜϫʔΫ Laravel WebΞϓϦέʔγϣϯ։ൃ όʔδϣϯ5.5 LTSରԠ : 4180ԁ
    
    
    ΈΜͳͷPHPɹݱ৔Ͱ໾ཱͭ࠷৽ϊ΢ϋ΢ʂ : 2398ԁ
    
    
    

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15. Copyright© M&A
    15
    Predefined Interfaces
    Predefined Interface
    class BookShelf implements Iterator {
    
    
    … ུ …
    
    
    public function addNewArrival(string $name, int $price)
    
    
    {
    
    
    $this->books[] = new Book($name, $price, isNew: true);
    
    
    }
    
    
    }
    
    
    $books = [
    
    
    new Book(name: 'PHPϑϨʔϜϫʔΫ Laravel WebΞϓϦέʔγϣϯ։ൃ όʔδϣϯ5.5 LTSରԠ', price: 4180),
    
    
    new Book(name: 'ΈΜͳͷPHPɹݱ৔Ͱ໾ཱͭ࠷৽ϊ΢ϋ΢ʂ', price: 2398)
    
    
    ];
    
    
    $boolShelf = new BookShelf($books);
    
    
    $boolShelf->addNewArrival(name: 'ϓϩϑΣογϣφϧWebϓϩάϥϛϯά Laravelʪ࠷৽Laravel 9ରԠʫ', price: 3520);
    
    
    foreach ($boolShelf as $book) {
    
    
    print($book);
    
    
    print("\n");
    
    
    }
    

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16. Copyright© M&A
    16
    Predefined Interfaces
    Predefined Interface
    ~/Project/predefined-interface
    
    
    ▶ php iterator.php
    
    
    PHPϑϨʔϜϫʔΫ Laravel WebΞϓϦέʔγϣϯ։ൃ όʔδϣϯ5.5 LTSରԠ : 4180ԁ
    
    
    ΈΜͳͷPHPɹݱ৔Ͱ໾ཱͭ࠷৽ϊ΢ϋ΢ʂ : 2398ԁ
    
    
    ϓϩϑΣογϣφϧWebϓϩάϥϛϯά Laravelʪ࠷৽Laravel 9ରԠʫ : 3520ԁ ৽ൃച
    
    
    

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17. Copyright© M&A
    17
    Predefined Interfaces
    Predefined Interface
    echo print throw foreach
    string string string->toJapanese();
    

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