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run code in 200+ php & hhvm versions
Bugs & Features
<?php $fp = fopen('php://temp', 'r'); var_dump( $fp, var_export($fp, true) );
based on ZLRfv
Output for 5.6.30, 7.0.30 - 7.3.0alpha1
resource(5) of type (stream) string(4) "NULL"
Output for hhvm-3.18.5 - 3.22.0
resource(4) of type (stream) string(4) "NULL"