PHP mysql extension issues with mysqli extension query results

PHP mysql extension issues using MYSQLI to extend query results
Background:
Change some of the MySQL extensions in the system to use mysqli extensions.

The problem arises:
Since the code is interleaved, there are many places where you use Mysql_fetch_array () to use the Mysqli_query () function result, whereas the mysql_fetch_array () function has a resource type, mysqli_query The result of the () function is Mysqli_result type, so there will be a lot of "mysql_fetch_array () expects parameter 1 to be resource, object given ..." in error log. Alarm.

Is there any way to resolve if Mysqli_result can be converted into effective resource

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I have been human flesh to modify the code. Fortunately, the code is not much, in fact, with MySQL good
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I think it would be nice to change it to the same.
In fact, the code will still have a lot of problems, in case the database is changed to Oracle??
It is recommended that you use the same interface, such as using PDO operations.
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Explore

The point is, I have too much code.
Reference:

I have been human flesh to modify the code. Fortunately, the code is not much, in fact, with MySQL good

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