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<?php function test($a) { if (!is_array($a) && ! $a instanceof \Traversable) { throw new \Exception("here"); } return implode(' ', $a); } $traversable = new ArrayObject(); $traversable['test'] = 'that'; echo test(['a', 'b', 'c']); echo test((array) $traversable);
Output for git.master, git.master_jit, rfc.property-hooks
a b cthat

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