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<?php class Test { private $obj; const MAP = ['testKey' => 'test']; function __construct() { $this->obj = new \stdClass(); $this->obj->test = "testObject"; } public function isKey($name = 'testKey') { var_dump(empty($this->obj->{static::MAP[$name]})); var_dump(empty($this->obj->$name)); } } $t = new Test(); $t->isKey();
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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
bool(false) bool(true)
Output for 5.5.0 - 5.5.38
Fatal error: Arrays are not allowed in class constants in /in/Ue5Cj on line 6
Process exited with code 255.
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218.74 ms | 401 KiB | 330 Q