Example
trait HelloWorld {
public function sayHello() {
echo 'Hello World!';
}
}
// Change visibility of sayHello
class MyClass1 {
use HelloWorld { sayHello as protected; }
}
// Alias method with changed visibility
// sayHello visibility not changed
class MyClass2 {
use HelloWorld { sayHello as private myPrivateHello; }
}
Running this example:
(new MyClass1())->sayHello();
// Fatal error: Uncaught Error: Call to protected method MyClass1::sayHello()
(new MyClass2())->myPrivateHello();
// Fatal error: Uncaught Error: Call to private method MyClass2::myPrivateHello()
(new MyClass2())->sayHello();
// Hello World!
So be aware that in the last example in MyClass2 the original un-aliased method from trait HelloWorld stays accessible as-is.
