Greater > and Less Than < comparisons with non-numeric, non-string, non-resource types should report error

[kkmuffme]

e.g. https://psalm.dev/r/e63cef6890 this is a redundant condition but isn't reported, or https://psalm.dev/r/29eb392672 which causes a PHP notice.

However there are tons of things one can do wrong with those operators: https://www.php.net/manual/en/language.operators.comparison.php#language.operators.comparison.types and it would take an immense amount of time to figure out all possible cases and all report them as separate errors.

As a first, I suggest to report all > and < operations that contain an array, object, probably even null and bool as possible error - and refine this if e.g. there are too many false positives for some cases (e.g. int|false > 100)

[psalm-github-bot[bot]]

I found these snippets:

https://psalm.dev/r/e63cef6890

<?php

$a = array();

if ( $a > PHP_INT_MAX ) {
    echo "yes";
}

Psalm output (using commit ef3b018):

No issues!

https://psalm.dev/r/29eb392672

<?php

$a = new stdClass();

if ( $a > PHP_INT_MAX ) {
    echo "yes";
}

Psalm output (using commit ef3b018):

No issues!