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run code in 150+ php & hhvm versions
Bugs & Features
<?php $string = 'ab'; // unset($string[0]); $string[0] = NULL; var_dump($string);
Output for 7.1.0
Warning: Cannot assign an empty string to a string offset in /in/LEkNI on line 4 string(2) "ab"
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.0.14
string(2) "b"