PHP 8.1 pg_query() stubs issue

[zbenc]

Bug report

PHPStan (1.6.2) incorrectly reports errors for pg_query() for PHP 8.1:

It does not seam to be aware that pg_query() expects a PgSql\Connection object as the first parameter and returns a PgSql\Result object as of PHP 8.1. I have checked the PHP 8 stubs at https://github.com/phpstan/php-8-stubs/blob/main/stubs/ext/pgsql/pg_query.php but cannot spot an issue there as those signatures include the correct PHP 8.1 derivative.

Code snippet that reproduces the problem

function test(): \PgSql\Result|false {
  return \pg_query(\pg_connect(''), '');
}

https://phpstan.org/r/e6aba2b0-e06c-4e46-835a-a1b1fbe294d3

Expected output

No error messages

[phpstan-bot]

@zbenc After the latest push in 1.8.x, PHPStan now reports different result with your code snippet:

@@ @@
-PHP 8.1 (3 errors)
+PHP 8.1 (1 error)
 ==========
 
-3: Function test() never returns PgSql\Result so it can be removed from the return type.
-4: Function test() should return PgSql\Result|false but returns resource|false.
-4: Parameter #1 $connection of function pg_query expects resource, PgSql\Connection|false given.
+4: Parameter #1 $connection of function pg_query expects PgSql\Connection|string, PgSql\Connection|false given.
 
 PHP 8.0 (4 errors)
 ==========

Full report

PHP 8.1 (1 error)

Line	Error
4	`Parameter #1 $connection of function pg_query expects PgSql\Connection

PHP 8.0 (4 errors)

Line	Error
3	Function test() has invalid return type PgSql\Result.
3	Function test() never returns PgSql\Result so it can be removed from the return type.
4	`Function test() should return PgSql\Result
4	`Parameter #1 $connection of function pg_query expects resource, resource

PHP 7.1 – 7.4 (5 errors)

Line	Error
3	Function test() has invalid return type PgSql\Result.
3	Function test() never returns PgSql\Result so it can be removed from the return type.
3	Function test() uses native union types but they're supported only on PHP 8.0 and later.
4	`Function test() should return PgSql\Result
4	`Parameter #1 $connection of function pg_query expects resource, resource

[github-actions]

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