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  1. <?php
  2. error_reporting(E_ALL);
  3. ini_set('display_errors', 1);
  4.  
  5. class ParentClass
  6. {
  7. public function __construct()
  8. {
  9. }
  10.  
  11. public function testMethod()
  12. {
  13. echo "this should work in both classes ";
  14. echo '<br>';
  15. }
  16. }
  17.  
  18. class ChildClass extends ParentClass
  19. {
  20.  public function __construct(string $param1 = 'test', string $param2)
  21. {
  22. }
  23. }
  24.  
  25. $classes = ['ParentClass', 'ChildClass', 'ParentClass', 'ChildClass'];
  26.  
  27. foreach ($classes as $class) {
  28. $object = new $class();
  29. $object->testMethod();
  30. }
Runtime error #stdin #stdout #stderr 0s 82880KB
comments (?)
stdin
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Standard input is empty
stdout
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this should work in both classes <br>
Fatal error: Uncaught ArgumentCountError: Too few arguments to function ChildClass::__construct(), 0 passed in /home/lpoSIT/prog.php on line 28 and exactly 2 expected in /home/lpoSIT/prog.php:20
Stack trace:
#0 /home/lpoSIT/prog.php(28): ChildClass->__construct()
#1 {main}
  thrown in /home/lpoSIT/prog.php on line 20
stderr
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PHP Fatal error:  Uncaught ArgumentCountError: Too few arguments to function ChildClass::__construct(), 0 passed in /home/lpoSIT/prog.php on line 28 and exactly 2 expected in /home/lpoSIT/prog.php:20
Stack trace:
#0 /home/lpoSIT/prog.php(28): ChildClass->__construct()
#1 {main}
  thrown in /home/lpoSIT/prog.php on line 20
https://ideone.com/U1QFQk
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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