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run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump ((string) null); var_dump((string) true); var_dump((string) false);
based on cKgkU
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0rc3
string(0) "" string(1) "1" string(0) ""