How Can I Successfully Migrate My MySQL Code to MySQLi?

Transitioning from MySQL to MySQLi: A Guide

In the context of your code, you inquired if changing mysql_query($sql); to mysqli_query($sql); would suffice for converting your script to use MySQLi. While it is a crucial step, it alone is not sufficient. A comprehensive changeover from MySQL to MySQLi requires replacing every instance of MySQL_ functions with their MySQLi_ equivalents.

To facilitate this process, refer to the MySQLi Extension Function Summary. Here's a mapping of some key functions:

• mysql_connect ➜ mysqli_connect
• mysql_error ➜ mysqli_error or mysqli_connect_error (based on context)
• mysql_query ➜ mysqli_query

Moreover, pay heed to potential differences in function parameters. For example, while MySQL requires a subsequent mysql_select_db call to specify the target database, MySQLi permits specifying it as the fourth argument of mysqli_connect. Alternatively, you can still use mysqli_select_db.

Once all these changes are implemented, execute your script and check its functionality. If it fails, it calls for diligent bug tracking.

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