--TEST-- Conflicting properties with different initial values are considered incompatible. --FILE-- <?php error_reporting(E_ALL); trait THello1 { public $hello = "foo"; } trait THello2 { private $hello = "bar"; } echo "PRE-CLASS-GUARD\n"; class TraitsTest { use THello1; use THello2; public function getHello() { return $this->hello; } } $t = new TraitsTest; ?> --EXPECTF-- PRE-CLASS-GUARD Fatal error: THello1 and THello2 define the same property ($hello) in the composition of TraitsTest. However, the definition differs and is considered incompatible. Class was composed in %s on line %d