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run code in 150+ php & hhvm versions
Bugs & Features
<?php /* Accepting NULL value */ function test(stdClass $obj) { echo $obj->test; } test(new stdclass('a')); ?>
Output for 5.2.6 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Notice: Undefined property: stdClass::$test in /in/fOcYX on line 7
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.2.5
Notice: Undefined property: stdClass::$test in /in/fOcYX on line 7
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/fOcYX on line 4
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, expecting ')' in /in/fOcYX on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/fOcYX on line 4
Process exited with code 255.