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<?php class Foo implements IteratorAggregate { public function getIterator() { return ['foo', 'bar', 'baz']; } } foreach (new Foo as $foo) { var_dump($foo); }
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Deprecated: Return type of Foo::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/4Qa9a on line 5 Fatal error: Uncaught Exception: Objects returned by Foo::getIterator() must be traversable or implement interface Iterator in /in/4Qa9a:11 Stack trace: #0 {main} thrown in /in/4Qa9a on line 11
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
Fatal error: Uncaught Exception: Objects returned by Foo::getIterator() must be traversable or implement interface Iterator in /in/4Qa9a:11 Stack trace: #0 {main} thrown in /in/4Qa9a on line 11
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28
Fatal error: Uncaught exception 'Exception' with message 'Objects returned by Foo::getIterator() must be traversable or implement interface Iterator' in /in/4Qa9a:11 Stack trace: #0 /in/4Qa9a(11): unknown() #1 {main} thrown in /in/4Qa9a on line 11
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/4Qa9a on line 7
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/4Qa9a on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/4Qa9a on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting '{' in /in/4Qa9a on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/4Qa9a on line 3
Process exited with code 255.

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