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run code in 150+ php & hhvm versions
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<?php function test() { var_dump(($GLOBALS)); } $a = "GLOBALS"; var_dump(isset($$a)); ?>
based on DYK61
Output for 5.0.0 - 5.6.26, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
bool(true)
Output for 4.3.0 - 4.4.9
bool(false)