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<?hh namespace A { class T {} } namespace { class Test { public function first(string $str) : Closure { /* closure with return type declaration and use() clause */ $tmp = function() : int use ($str) { return strlen($str); }; return $tmp; } public function second() : self { return $this; } } class SubTest extends Test { public function third() : parent { return $this; } /* returning a namespace-qualified type */ public function fourth() : \A\T { return new \A\T; } /* spaces are allowed around elements of the namespace */ public function fifth() : \ A \ T { return $this->fourth(); } } $s = new SubTest; $t = $s->third(); var_dump(($t->second()->first("hello"))()); var_dump($s->fourth()); var_dump($s->fifth()); }
Output for 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
<?hh namespace A { class T {} } namespace { class Test { public function first(string $str) : Closure { /* closure with return type declaration and use() clause */ $tmp = function() : int use ($str) { return strlen($str); }; return $tmp; } public function second() : self { return $this; } } class SubTest extends Test { public function third() : parent { return $this; } /* returning a namespace-qualified type */ public function fourth() : \A\T { return new \A\T; } /* spaces are allowed around elements of the namespace */ public function fifth() : \ A \ T { return $this->fourth(); } } $s = new SubTest; $t = $s->third(); var_dump(($t->second()->first("hello"))()); var_dump($s->fourth()); var_dump($s->fifth()); }
Output for 8.0.13
Parse error: syntax error, unexpected token "namespace" in /in/CAF0X on line 3
Process exited with code 255.
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.16, 7.0.0, 7.3.32 - 7.3.33, 7.4.33
Parse error: syntax error, unexpected 'namespace' (T_NAMESPACE) in /in/CAF0X on line 3
Process exited with code 255.

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