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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(); $traversable['test'] = 'that'; echo test(['a', 'b', 'c']); echo test($traversable);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Exception: here in /in/KDE59:5 Stack trace: #0 /in/KDE59(12): test(Array) #1 {main} thrown in /in/KDE59 on line 5
Process exited with code 255.

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