note 129344 added to migration80.incompatible

The most significant issue is the "String to Number Comparison." It appears that the negation operator, such as $a != $b, is just syntactic sugar over !($a == $b). Therefore, it shares the same incompatibility as described in the manual. However, the in_array and switch constructs are likely incompatible too, probably for the same reason. For example: ``` switch (123) { case '123 x': echo "\n123 = '123x'"; // PHP7.4 true / PHP8 false case ' x': echo "\n123 = ' x'"; // PHP7.4 true / PHP8 false } switch (0) { case '': echo "\n0 = ''"; // PHP7.4 true / PHP8 false } ``` If there were a simple way to add an event when an incompatible comparison takes place (and log it), it would be much easier. But now upgrading an old project to PHP 8 is extremely time-consuming and error-prone. ---- Server IP: 45.112.84.4 Probable Submitter: 80.90.13.131 (proxied: 89.64.110.12) ---- Manual Page -- https://php.net/manual/en/migration80.incompatible.php Edit -- https://main.php.net/note/edit/129344 Del: integrated -- https://main.php.net/note/delete/129344/integrated Del: useless -- https://main.php.net/note/delete/129344/useless Del: bad code -- https://main.php.net/note/delete/129344/bad+code Del: spam -- https://main.php.net/note/delete/129344/spam Del: non-english -- https://main.php.net/note/delete/129344/non-english Del: in docs -- https://main.php.net/note/delete/129344/in+docs Del: other reasons-- https://main.php.net/note/delete/129344 Reject -- https://main.php.net/note/reject/129344 Search -- https://main.php.net/manage/user-notes.php