How to Fix Persian Character Encoding Problems When Migrating from TUBADBENGINE to MySQL?

Fixing Strange Character Encoding Issues for Persian Characters in MySQL

In your scenario, you're migrating an old website that uses Persian characters to a new script written in CodeIgniter. The old script is using a database engine called TUBADBENGINE, which encodes characters differently compared to MySQL.

Root Cause of the Issue:

The issue arises because the database connection for the new script and the old script is set differently. While the CodeIgniter script is configured with UTF-8 encoding, the database connection for the old script may be using a different encoding (such as Latin1).

This mismatch causes the following problems:

• When the old script inserts data into the database, characters are stored in an encoded format that is not recognized by MySQL.
• When the new script fetches data from the database, it interprets the encoded characters as incorrect Persian characters.
• When the old script fetches data from the database, it can decode the characters correctly because of the different database connection encoding.

Database Conversion:

To resolve this issue, you need to convert the data stored in the database to the correct UTF-8 encoding. You can use the following query:

SELECT CONVERT(BINARY CONVERT(field_name USING latin1) USING utf8) FROM table_name

Replace field_name with the actual column name that stores the Persian characters. If your database connection is set to a different encoding besides Latin1, use that encoding instead.

Once you have the correct characters stored in the database, the new script should be able to display them properly.

Additional Notes:

• Ensure that all your database tables and columns are set to the utf8_persian_ci collation to ensure proper character encoding.
• Verify that the database connection in your CodeIgniter script is set to UTF-8.
• If the problem persists after implementing these changes, check the character encoding settings for your database server to ensure that it is configured for UTF-8.

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