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<?php class MyClass { private $val = 1; public function getVal() { return $this->val; } } trait MyTrait { public function cry() { echo "nya"; } } interface MyInterface { public function say(); } abstract class MyAbstract { abstract public function shout(); } function check($class_name) { echo "================ ", $class_name, " ================= \n"; $h = new \ReflectionClass($class_name); echo "abstract? ", $h->isAbstract() ? "true" : "false" , "\n"; echo "trait? ", $h->isTrait() ? "true" : "false" , "\n"; echo "interface? ", $h->isInterface() ? "true" : "false" , "\n"; echo "実体化可能? ", $h->isInstantiable() ? "true" : "false" , "\n"; } check("MyClass"); check("MyTrait"); check("MyInterface"); check("MyAbstract");
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
================ MyClass ================= abstract? false trait? false interface? false 実体化可能? true ================ MyTrait ================= abstract? false trait? true interface? false 実体化可能? false ================ MyInterface ================= abstract? true trait? false interface? true 実体化可能? false ================ MyAbstract ================= abstract? true trait? false interface? false 実体化可能? false
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28
================ MyClass ================= abstract? false trait? false interface? false 実体化可能? true ================ MyTrait ================= abstract? true trait? true interface? false 実体化可能? false ================ MyInterface ================= abstract? true trait? false interface? true 実体化可能? false ================ MyAbstract ================= abstract? true trait? false interface? false 実体化可能? false
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 T_STRING in /in/HP5Vb on line 12
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_STRING in /in/HP5Vb on line 12
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/HP5Vb on line 4
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 T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/HP5Vb on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/HP5Vb on line 4
Process exited with code 255.

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