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run code in 150+ php & hhvm versions
Bugs & Features
<?php $z1 = "abc"; $out = "a"; for ($i = 0; $i < strlen($z1); $i++) { $out[$i] = $z1[$i]; // $out = $out.$z1[$i]; } //print_r ($out); echo $out;
Output for 4.3.0 - 5.2.9, 5.2.12 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
abc
Output for 5.2.10 - 5.2.11
Notice: Uninitialized string offset: 1 in /in/U9cvE on line 7 Notice: Uninitialized string offset: 2 in /in/U9cvE on line 7 abc