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run code in 150+ php & hhvm versions
Bugs & Features
<?php namespace \Some\MyNameSpace; class SomeClass {} $class = '\\Some\\MyNamespace\\SomeClass'; $object = new $class(); var_dump($object instanceof \Some\MyNameSpace\SomeClass); //bool(false)
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Undefined constant 'Some\MyNameSpace' in /in/A6XlU:2 Stack trace: #0 {main} thrown in /in/A6XlU on line 2
Process exited with code 255.
Output for 5.3.0 - 5.6.28, hhvm-3.12.0
Fatal error: Undefined constant 'Some\MyNameSpace' in /in/A6XlU on line 2
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/A6XlU on line 2 Parse error: syntax error, unexpected T_STRING in /in/A6XlU on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/A6XlU on line 2 Parse error: parse error, unexpected T_STRING in /in/A6XlU on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/A6XlU on line 2 Parse error: parse error in /in/A6XlU on line 2
Process exited with code 255.