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run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump((string) fopen('php://stdout', 'a'));
Output for 5.2.3 - 7.1.0
string(14) "Resource id #5"
Output for 5.0.0 - 5.2.2
string(14) "Resource id #2"
Output for 4.3.0 - 4.4.9
string(14) "Resource id #1"