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<?php trait Blah { function getOne() { return 1;} } abstract class AbstractTest { use Blah; } class Test extends AbstractTest {} function hier($class) { $traits = class_uses($class) ?: []; $parents = class_parents($class) ?: []; foreach ($parents as $parent) { $traits = array_merge($traits, hier($parent)); } return $traits; } $t = new Test; echo $t->getOne() . "\n"; var_dump(class_parents(Test::class)); var_dump(hier(Test::class));
Output for git.master, git.master_jit, rfc.property-hooks
1 array(1) { ["AbstractTest"]=> string(12) "AbstractTest" } array(1) { ["Blah"]=> string(4) "Blah" }

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