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Bug #79469 Property access is not allowed yet on a non-initlized connection
Submitted: 2020-04-12 19:00 UTC Modified: 2020-04-13 11:32 UTC
From: morozov at tut dot by Assigned:
Status: Open Package: MySQLi related
PHP Version: master-Git-2020-04-12 (Git) OS: Linux
Private report: No CVE-ID: None
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 [2020-04-12 19:00 UTC] morozov at tut dot by
When handling connection exceptions, Doctrine DBAL uses the mysqli::$sqlstate property of the connection. Prior to PHP 8, access to the property of a non-initialized connection would result in a warning and returned false: In PHP 8 the warning got promoted to a fatal error.

There doesn't seem to be a way to see if the connection is initialized, so it might make sense to just return false there and not raise an error.

Additionally, the possible false value of the property is not documented in which leads to false-positive issues during static analysis.

Test script:

Expected result:

Actual result:
Fatal error: Uncaught Error: Property access is not allowed yet


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 [2020-04-13 00:02 UTC] bugreports at gmail dot com
> var_dump(mysqli_init()->sqlstate);

that code make sno sense at all
 [2020-04-13 11:32 UTC]
Well, the Error can be caught:

try {
} catch (Error $e) {
    echo $e->getMessage(), PHP_EOL;

Still, it may make sense to introduce a function for checking
whether a mysqli instance is connected.
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