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(PHP 5, PHP 7, PHP 8)
mysqli_warning::next — Fetch next warning
Change warning information to the next warning if possible.
Once the warning has been set to the next warning, new values of properties message,
sqlstate and errno of mysqli_warning
are available.
此函数没有参数。
Returns true if next warning was fetched successfully.
If there are no more warnings, it will return false
