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<?php var_dump(var_dump((object)'stdClass'));
based on VoX1q
Output for 5.0.0 - 7.1.0
object(stdClass)#1 (1) { ["scalar"]=> string(8) "stdClass" } NULL
Output for 4.3.0 - 4.4.9
object(stdClass)(1) { ["scalar"]=> string(8) "stdClass" } NULL