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<?php $a = new SimpleXMLElement('<foo />'); $b = new SimpleXMLElement('<foo><bar /></foo>'); \var_dump($a ? 'a' : 'not a'); \var_dump($b ? 'b' : 'not b');
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.2.8
string(5) "not a" string(1) "b"