Online PHP editor | output for N3FoQ

@ 2016-11-14T15:31:17Z

<?php

class ArrayClass {
  public function foo(array $foo) { /* ... */ }
}

class IterableClass extends ArrayClass {
  // This implementation also accepts Traversable.
  // Variance is already possible in this special case using "iterable".
  public function foo(iterable $foo) { /* ... */ }
}

class EverythingClass extends ArrayClass {
  // This implementation accepts all values.
  // Restrictions may be done via user code in the method body.
  // Variance is currently not allowed, it throws a warning if parent or child miss a type.
  public function foo($foo) { /* ... */ }
}

Output for 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Output for 7.1.0 - 7.1.20: Warning: Declaration of EverythingClass::foo($foo) should be compatible with ArrayClass::foo(array $foo) in /in/N3FoQ on line 18
Output for 7.0.0 - 7.0.20: Warning: Declaration of IterableClass::foo(iterable $foo) should be compatible with ArrayClass::foo(array $foo) in /in/N3FoQ on line 11 Warning: Declaration of EverythingClass::foo($foo) should be compatible with ArrayClass::foo(array $foo) in /in/N3FoQ on line 18
Output for 5.6.0 - 5.6.28: Strict Standards: Declaration of IterableClass::foo() should be compatible with ArrayClass::foo(array $foo) in /in/N3FoQ on line 11 Strict Standards: Declaration of EverythingClass::foo() should be compatible with ArrayClass::foo(array $foo) in /in/N3FoQ on line 18

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