Online PHP editor | output for Q2Y6j

@ 2015-09-20T22:05:09Z

<?php

interface SerializableInterface {};
interface SomeResizableInterface {};
interface IterableInterface {};
trait SomeSerializableTrait {};

class SomeContainer implements SerializableInterface, IterableInterface {
    use SomeSerializableTrait;
}

class SomeOtherContainer extends SomeContainer implements SomeResizableInterface {}

$someContainer = new SomeContainer;
$someOtherContainer = new SomeOtherContainer;

var_dump($someContainer instanceof SerializableInterface);
var_dump($someOtherContainer instanceof SerializableInterface);

var_dump($someOtherContainer instanceof SomeSerializableTrait);

// type hint it
function testTrait(SomeSerializableTrait $container) {}
function testInterface(SomeResizableInterface $container) {}

testTrait($someOtherContainer);
testInterface($someOtherContainer);

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: bool(true) bool(true) bool(false) Fatal error: Uncaught TypeError: testTrait(): Argument #1 ($container) must be of type SomeSerializableTrait, SomeOtherContainer given, called in /in/Q2Y6j on line 26 and defined in /in/Q2Y6j:23 Stack trace: #0 /in/Q2Y6j(26): testTrait(Object(SomeOtherContainer)) #1 {main} thrown in /in/Q2Y6j on line 23
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33: bool(true) bool(true) bool(false) Fatal error: Uncaught TypeError: Argument 1 passed to testTrait() must be an instance of SomeSerializableTrait, instance of SomeOtherContainer given, called in /in/Q2Y6j on line 26 and defined in /in/Q2Y6j:23 Stack trace: #0 /in/Q2Y6j(26): testTrait(Object(SomeOtherContainer)) #1 {main} thrown in /in/Q2Y6j on line 23
Process exited with code 255.
Output for 5.4.1 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28: bool(true) bool(true) bool(false) Catchable fatal error: Argument 1 passed to testTrait() must be an instance of SomeSerializableTrait, instance of SomeOtherContainer given, called in /in/Q2Y6j on line 26 and defined in /in/Q2Y6j on line 23
Process exited with code 255.

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