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run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = 'zz'; $b = $a; var_dump(++$a,ord($b),chr(122),ord($a));
based on C5bev
Output for 4.3.0 - 7.3.0beta1
string(3) "aaa" int(122) string(1) "z" int(97)