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<?php class SomeClass { protected string|stdClass $a; } $unionType = (new \ReflectionClass(SomeClass::class))->getProperty('a')->getType(); var_dump($unionType->isBuiltin());
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
Fatal error: Uncaught Error: Call to undefined method ReflectionUnionType::isBuiltin() in /in/5BDRn:8 Stack trace: #0 {main} thrown in /in/5BDRn on line 8
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Parse error: syntax error, unexpected '|', expecting variable (T_VARIABLE) in /in/5BDRn on line 4
Process exited with code 255.
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33
Parse error: syntax error, unexpected 'string' (T_STRING), expecting function (T_FUNCTION) or const (T_CONST) in /in/5BDRn on line 4
Process exited with code 255.
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