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run code in 200+ php & hhvm versions
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<?php $a = array("dec 2015", "january 2015", "jan 2015", "2 jan 2015"); var_dump(array_map(function($v) { return new DateTime($v)->getDay(); }, $a));
based on d5XSq
Output for 7.0.0 - 7.0.2
Parse error: syntax error, unexpected '->' (T_OBJECT_OPERATOR), expecting ';' in /in/0OT2M on line 4
Process exited with code 255.
Output for 5.4.12 - 5.6.17
Parse error: syntax error, unexpected '->' (T_OBJECT_OPERATOR) in /in/0OT2M on line 4
Process exited with code 255.
Output for 5.3.22 - 5.3.29
Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/0OT2M on line 4
Process exited with code 255.