Can I Mix `mysql_` and `mysqli_` APIs in PHP?

Can't Mix MySQL APIs in PHP

Can you mix MySQL APIs in PHP? This question has prompted discussion online, with some claiming it's possible to use both mysql_ and mysqli_ APIs simultaneously. Let's dive into the issue and explore the limitations:

In one example provided, the code appears to connect using mysqli_connect() and close the connection using mysql_close(), raising a warning. This is because these APIs utilize distinct resources incompatible with each other.

In another attempt, mysqli_close() was used, but the warning persisted.

Key Points:

• You cannot use both mysql_ and mysqli_ APIs simultaneously.
• Each API creates its own resources, and these resources are incompatible with each other.
• The correct way to close a mysqli connection is using mysqli_close().

To verify a connection's validity, you can use if (mysqli_connect_errno($con)) { ... } to check for connection errors.

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