PHP Digest # 204 (May 17 - 31, 2021)

Photo: Christian Münch .



During these two weeks of the core, the PHP team actively discussed the proposal for a Partial function Application and, as an alternative, Nikita Popov suggested a simpler syntax for getting a link to any function. It is also proposed to add static properties to the enums already adopted in PHP 8.1.



Symfony 6 will require PHP 8.0, and the released Doctrine 2.9 supports specifying metadata in attributes instead of PHPDoc.



Also in the release is a cool article about regexps and instructions for using Deployer, as well as other useful articles, a pack of tools, some videos and podcasts.



Enjoy reading!

PHP Internals

• [RFC] First-class callable syntax

  
  
  [RFC] Partial Function Application .
  
  
  
  

  //   
  $fn = Closure::fromCallable('strlen');
  $fn = Closure::fromCallable([$this, 'method']);
  $fn = Closure::fromCallable([Foo::class, 'method']);
  
  //   
  $fn = strlen(...);
  $fn = $this->method(...);
  $fn = Foo::method(...);
  
        
        
  
          
          
          
        
  
      
          
          
          
        
        
  
          
          
          
        
  
      
      

  
  
  
  
  , , callable
  
  
  
  . , :
  
  

  array_map(Something::toString(...), [1, 2, 3]);
  array_map(strval(...), [1, 2, 3]);
  
  // 
  array_map([Something::class, 'toString'], [1, 2, 3])
  array_map('strval', [1, 2, 3]);
  
        
        
  
          
          
          
        
  
      
          
          
          
        
        
  
          
          
          
        
  
      
      

  
  
  

• [RFC] Disable autovivification on false

  
  
  PHP null



false
  
  
  
  . false
  
  
  
  - Fatal error
  
  
  
  :
  
  

  $a = true;
  $a[] = 'value'; // Fatal error: Uncaught Error: Cannot use a scalar value as an array
  
  $a = null;
  $a[] = 'value'; // Ok
  
  $a = false;
  $a[] = 'value'; //   ,   
  
        
        
  
          
          
          
        
  
      
          
          
          
        
        
  
          
          
          
        
  
      
      

  3v4l.org/UucOC
  
  
  
  

• [RFC] Allow static properties in enums

  
  
  PHP 8.1 . PHP- php.watch.
  
  
  
  , .
  
  
  
  

  enum Environment {
      case DEV;
      case STAGE;
      case PROD;
  
      private static Environment $currentEnvironment;
  
      /**
       * Read the current environment from a file on disk, once.
       * This will affect various parts of the application.
       */
      public static function current(): Environment {
          if (!isset(self::$currentEnvironment)) {
              $info = json_decode(file_get_contents(__DIR__ . '/../../config.json'), true);
              self::$currentEnvironment = match($info['env']) {
                  'dev' => self::DEV,
                  'stage' => self::STAGE,
                  'prod' => self::PROD,
              };
          }
          return self::$currentEnvironment;
      }
      // Other methods can also access self::$currentEnvironment
  }
  printf("Current environment is %s\n", Environment::current()->name);
  
        
        
  
          
          
          
        
  
      
          
          
          
        
        
  
          
          
          
        
  
      
      

  
  
  . , .
  
  
  
  , PhpStorm 2021.2 enum
  
  
  
  , 2021.2 EAP.
  
  
  
  

• [PR] HTTP Early Hint support

  
  
  , PHP . HTTP 1xx
  
  
  
  . , 103
  
  
  
  , Link, , , 200 OK
  
  
  
  .
  
  
  
  , : 103
  
  
  
  , , header()
  
  
  
  , — echo
  
  
  
  .
  
  
  
  , . - API Symfony HTTP.
  
  
  
  

• [RFC] Add IntlDatePatternGenerator

  
  
  . PHP 8.1 IntlDatePatternGenerator
  
  
  
  . PHP Internals News #85 RFC.
  
  
  
  

• [RFC] Final class constants

  
  
  .
  
  
  
  

• Internals bugs.php.net

  
  
  issues GitHub. , . , . PHP, issue php/doc-en php/doc-ru. .

• Doctrine ORM 2.9 — ORM. PHP 8, , .
• Flarum 1.0.0 — PHP.
• moneyphp/money 4.0 — .
• phpast.com — PHP. nikic/PHP-Parser. : ryangjchandler/phpast.com.
• JBZoo/CI-Report-Converter — CI. — CI (TeamCity, GitHub Actions, etc). smetdenis.
• veewee/xml — XML .

Symfony

• Symfony.
• Symfony 5.3.
• Symfony 6 PHP 8.0 — , .

Laravel

• Tinker.
• Laravel Jetstream.
• «One of Many».
• Laravel Octane with Swoole — Beyond the Basics — Laravel core .

• PHP.Watch: PHP.
• Deployer GitHub Actions — deployphp/deployer .
• PHP — .
• copy-on-write PHP.
• Dependency Injection Software Engineering.
• ( ).
• PHP 35 ?
• DTO yzen-dev/plain-to-class.
  
  
  
  https://github.com/alexpts/php-data-transformer2 dto dto . .
  
  

/

• PHP Internals News #86 — .
• 38+ PhpStorm Christoph Rumpel.

• Mutation testing: how it will help and how to use it better - Interview with Max Rafalko on the eve of PHP Russia .

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