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  1. <?php
  2.  
  3. error_reporting(E_ALL);
  4. ini_set('display_errors', 1);
  5.  
  6. class ParentClass
  7. {
  8.     public function __construct()
  9.     {
  10.  
  11.     }
  12.  
  13.     public static function create()
  14.     {
  15.         $class = get_called_class();
  16.         return new $class;
  17.     }
  18.  
  19.     public static function testMethod()
  20.     {
  21.         echo 'this should work in both classes'.PHP_EOL;
  22.     }
  23.  
  24. }
  25.  
  26. class ChildClass extends ParentClass
  27. {
  28.  
  29.     public function __construct(string $param1 = 'test', string $param2)
  30.     {
  31.  
  32.     }
  33.  
  34. }
  35.  
  36. function testClass(ParentClass $class)
  37. {
  38.     $object = $class::create();
  39.     $object::testMethod();
  40. }
  41.  
  42. testClass(new ParentClass());
  43. testClass(new ChildClass('1', '2'));
  44.  
  45.  
  46.  
Runtime error #stdin #stdout #stderr 0.01s 82880KB
comments (?)
stdin
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Standard input is empty
stdout
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this should work in both classes

Fatal error: Uncaught ArgumentCountError: Too few arguments to function ChildClass::__construct(), 0 passed in /home/ro35GN/prog.php on line 16 and exactly 2 expected in /home/ro35GN/prog.php:29
Stack trace:
#0 /home/ro35GN/prog.php(16): ChildClass->__construct()
#1 /home/ro35GN/prog.php(38): ParentClass::create()
#2 /home/ro35GN/prog.php(43): testClass(Object(ChildClass))
#3 {main}
  thrown in /home/ro35GN/prog.php on line 29
stderr
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PHP Fatal error:  Uncaught ArgumentCountError: Too few arguments to function ChildClass::__construct(), 0 passed in /home/ro35GN/prog.php on line 16 and exactly 2 expected in /home/ro35GN/prog.php:29
Stack trace:
#0 /home/ro35GN/prog.php(16): ChildClass->__construct()
#1 /home/ro35GN/prog.php(38): ParentClass::create()
#2 /home/ro35GN/prog.php(43): testClass(Object(ChildClass))
#3 {main}
  thrown in /home/ro35GN/prog.php on line 29
https://ideone.com/zC5nTV
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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