PHP Union Type
Description
Allows multiple possible types[fn:rc] to be given to a parameter/member.
Syntax
class Example {
private int|float $foo;
public function __construct(int|float $foo) {
$this->foo = $foo;
}
public function doSomethingWithMultipleTypes(float|int $bar): int|float {
return ($bar + $this->foo) * 2;
}
}
Inheritance
class A{
public function foo(string|int $foo): string|int {}
}
class B extends A{
public function foo(string|int|float $foo): string {}
}