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<?php $test = '123'; var_dump($test{0}); var_dump($test{1}); var_dump($test{2}); var_dump(@$test{3}); var_dump(@$test{4});
Output for 5.2.10 - 7.1.0
string(1) "1" string(1) "2" string(1) "3" string(0) "" string(0) ""
Output for 4.3.0 - 5.2.9
string(1) "1" string(1) "2" string(1) "3" Notice: Uninitialized string offset: 3 in /in/fLUk9 on line 8 string(0) "" Notice: Uninitialized string offset: 4 in /in/fLUk9 on line 9 string(0) ""