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run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = "foo"; var_dump($a instanceof NotstdClass);
based on oJ82v
Output for 5.1.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
bool(false)
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.0.5
Fatal error: Class 'NotstdClass' not found in /in/KRar2 on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/KRar2 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING in /in/KRar2 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/KRar2 on line 3
Process exited with code 255.