Bug Report

Minimal PHP Code Causing Issue

See https://getrector.com/demo/7ace8e91-e71e-4705-b944-177fe6ecda3f

<?php

$string = 'Hello world';
$string[5] = $string[5] ^ '\x06';
echo $string, "\n";

Rector changes:

 $string = 'Hello world';
-$string[5] = $string[5] ^ '\x06';
+$string[5] ^= '\x06';
 echo $string, "\n";

But this breaks the code: https://3v4l.org/MC8JK

Responsible rules

• CombinedAssignRector

Expected Behavior

Code should not be changed.