Posts about PHP (old posts, page 2)

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• PHP 8.0 Comparison Change

  Oct 22, 2020

  Another new thing in PHP 8.0 will be slightly less madness in non strict value comparison.

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  Category: PHP • Tags: php 8

• OOP in PHP 4 and 8

  Oct 2, 2020

  Deprecation of class name constructors means that you no longer can write OOP code that works both in PHP 4 and PHP 8 without some hackery. This works however:

  <?php
  
  class WorksIn4And8
  {
      var $int;
  
      // Regular method in PHP 4
      // Constructor in 5-8
      function __construct($int)
      {
          error_log('__construct()');
          $this->int = $int;
      }
  
      // Constructor in PHP 4
      // Constructor overridden by __construct in 5-7
      // Regular method in PHP 8
      function WorksIn4And8($int)
      {
          error_log('WorksIn4And8()');
          $this->__construct($int);
      }
  
      function getInt()
      {
          return $this->int;
      }
  }
  
  $obj = new WorksIn4And8(48);
  
  var_dump($obj->getInt());
  

  Category: PHP • Tags: php 4, php 8

• PHP 8.0 Syntax Showcase

  Sep 30, 2020

  Since RC1 is released today, I decided to make a small demonstration of PHP 8.0 syntax features.

  <?php
  
  #[FuncAttribute]
  function func(SplHeap|ArrayObject|null $object, mixed $value = null): ArrayAccess|false
  {
      return match ($object?->count()) {
          0, null => throw new RuntimeException(),
          default => $object,
      };
  }
  
  try {
      func(object: new ArrayObject());
  } catch (RuntimeException) {
      // ignore
  }
  

  Category: PHP • Tags: php 8

• Method Calls with Arbitrary Names

  Jul 24, 2020

  A discovery of the day. Many people know that you can define and read an object property with an arbitrary name:

  <?php
  
  $s = new stdClass();
  $s->{'any string here'} = 123;
  echo $s->{'any string here'}; // 123
  

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  Category: PHP

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