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run code in 200+ php & hhvm versions
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<?php $obj = new DateTime; switch (true) { case ($obj instanceof stdClass): echo "stdClass"; break; case ($obj instanceof DateTime): echo "DateTime"; break; }
Output for 5.6.0 - 5.6.38, hhvm-3.15.4 - 3.22.0, 7.0.0 - 7.3.0rc4
DateTime