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<?php $stdClassTest = new stdClass(); $stdClassTest->testeUm = true; var_dump( empty($stdClassTest->testeUm) );
based on gXXaM
Output for 5.5.0 - 5.6.30, hhvm-3.12.14 - 3.17.3, 7.0.0 - 7.3.0rc4
bool(false)