How Can I Reliably Confirm MySQL Query Success After Modifying Data?

Confirming MySQL Query Success: Modifying Database Table Data

Issue:

When executing a MySQL query that modifies database table data, it's essential to ascertain its success. This ensures proper handling of actions dependent on the query's outcome.

Proposed Solution:

The provided PHP code attempts to delete a database record but only checks if the query is prepared correctly. It doesn't verify whether the record was successfully removed.

To accurately determine query success, the following steps should be taken:

1. Prepare and execute the SQL statement as usual.
2. Check the affected_rows property of the query result. If it is greater than 0, the query successfully modified data.

Revised Code:

if ($cmd == "deleterec") {
    $deleteQuery = "DELETE FROM AUCTIONS1 WHERE ARTICLE_NO = ?";
    if ($delRecord = $con->prepare($deleteQuery)) {
        $delRecord->bind_param("s", $pk);
        $delRecord->execute();
        $rowsAffected = $delRecord->affected_rows;
        $delRecord->close();
        echo ($rowsAffected > 0) ? 'true' : 'false';
    } else {
        echo "false";
    }
}

Additional Considerations:

It's important to also verify the result interpretation in the JavaScript code. If there is an issue there, it may not correctly handle the 'false' response from the PHP script.

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