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<?php $obj = new stdClass; $obj->{'123'} = "foo"; $arr = (array) $obj; var_dump($arr["123"]); // Undefined offset: 123
based on UGCgt
Output for 5.4.0 - 7.1.0
Notice: Undefined offset: 123 in /in/9Sccs on line 5 NULL
Output for 5.3.0 - 5.3.29
Notice: Undefined index: 123 in /in/9Sccs on line 5 NULL
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.2.17
Notice: Undefined index: 123 in /in/9Sccs on line 5 NULL
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/9Sccs on line 5
Process exited with code 255.
Output for 4.3.0 - 4.4.9
string(3) "foo"