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<?hh class Foo { protected $test; function setTest($test) : Foo { $this->test = $test; return $this; } } class Bar extends Foo { function setTest($test) : Bar { return parent::setTest($test); } } var_dump((new Bar)->setTest('test'));
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 7.2.29 - 7.2.33, 7.3.16 - 7.3.31, 7.4.3 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
<?hh class Foo { protected $test; function setTest($test) : Foo { $this->test = $test; return $this; } } class Bar extends Foo { function setTest($test) : Bar { return parent::setTest($test); } } var_dump((new Bar)->setTest('test'));
Output for 8.0.13
Parse error: syntax error, unexpected token "class" in /in/AuOsr on line 3
Process exited with code 255.
Output for 5.4.0 - 5.4.39, 7.3.32 - 7.3.33, 7.4.33
Parse error: syntax error, unexpected 'class' (T_CLASS) in /in/AuOsr on line 3
Process exited with code 255.

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