Second parameter of mysqli_fetch_all throws error, while being totally valid #549
Description
In some old code i am trying to improve the following, completely valid call (in procedural style), get interpreded by phpstan as an error. (see http://php.net/manual/de/mysqli-result.fetch-all.php) However in the object oriented style it does work as expected.
This seems like an error doesn't it? If so i will propose a pull request. Maybe related to #527
<?php // foo.php
$result = new mysqli_result();
$rows = mysqli_fetch_all($result, MYSQLI_ASSOC);phpstan analyse asd/foo.php
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Line foo.php
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4 Function mysqli_fetch_all invoked with 2 parameters, 1 required.
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