Please attach the whole file (and only the file), that shows this problem.

Can you please supply the requested information?

Sorry, It was refactored and I can not find more the part in source code. :(

Okay, that's fine. Let me know (in a new issue) when you see this happening again, and then please attach that whole file to the ticket.

Hello, thanks for your great work.

Got this issue too FYI. Cannot drop client file here but here somme explanation for my case:

Working:

$bar = [
'data' => [
'select' => array_merge(
$queryTableDataSelect,
[
'foo',
'bar',
]
)
]
];

Not working:

$foo = [
'data' => [
'parent_select' => [
'select' => []
],
'select' => array_merge(
$queryTableDataSelect,
[
'foo',
'bar',
]
)
]
];

Cannot join file, got error from database.

Forgot version when i re-write issue: PHP 7.4.4 and xDebug 2.9.2

I am having the same issue. I have found this to be the case with multiple php functions such as json_encode, array_merge, array_map, sprintf, ...
In my instance these functions are not covered when placing them in multi-line, but are covered when placing the code inline.

Working:
$foo = [
'bar' => json_encode(['Hello' => 'World'], JSON_THROW_ON_ERROR, 512)
];

Not working:
$foo = [
'bar' => json_encode(
['Hello' => 'World'],
JSON_THROW_ON_ERROR,
512
)
];

in this not working example the line 'bar' => json_encode( is marked as not covered.

Please create a new bug report (this is closed) when providing whole files that I can "php -r" , and tell me which exact lines aren't covered. Please read the instructions on what I need at https://xdebug.org/reporting-bugs (I'll add a specific code coverage section in a few hours).