Mysql which utf 8 to use

Remember, though, that the strings you provide to these functions must themselves be properly encoded. There is also the mbstring extension to PHP information on enabling and configuring it is available here. This extension provides a comprehensive set of functions that properly account for multibyte encoding.

To verify that everything has properly been set to use the UTF-8 encoding, execute the following query:. In MySQL 5. More info is available here. More information is available here. Note to Windows users: This charset string replacement from latin1 to UTF-8 can also be done using find-and-replace in WordPad or some other text editor, such as vim. Then, restore the dump into the database:. Search for any records that may not have converted properly and correct them.

Since non-ASCII characters are multi-byte by design, we can find them by comparing the byte length to the character length i. This is actually a bit tricky. A double encoded string is one that was properly encoded as UTF First, we set the encoding type for the column back to latin1, thereby removing the double encoding:. Note: Be sure to use the correct field type for your table. Be sure to specify it properly! This exploits the fact that MySQL will not attempt to encode a blob.

Again, as noted above, be sure to use the proper field type for your table. Re-insert fixed rows back into the original table before doing this, you may want to run some selects on the temptable to verify that it appears to be properly corrected, just as a sanity check. Verify the remaining data and, if necessary, repeat the process in step 7 this could be necessary, for example, if the data was triple encoded.

This extension was deprecated in PHP 5. Alternatives to this function include:. The MySQL connection. Returns true on success or false on failure. Note : This is the preferred way to change the charset. See the MySQL character set concepts section for more information. Submit a Pull Request Report a Bug.

Warning This extension was deprecated in PHP 5. Parameters charset A valid character set name. Return Values Returns true on success or false on failure. I needed to access the database from within one particular webhosting service. Pages are UTF-8 encoded and data received by forms should be inserted into database without changing the encoding.

The database is also in UTF Neither SET character set 'utf8' or SET names 'utf8' worked properly here, so this workaround made sure all variables are set to utf Here's an example of how to use this feature : I'm using PHP 5. You can simply run the below query in your database to resolve the issue. If you have previously installed Moodle and are now getting the error the following process will allow you to convert your database. The following steps will guide you in creating a database dump, editing the database dump so that the correct charset and collation are used and then restoring the new database.

The first step is of course to dump out the database and of course we will use mysqldump for this. We do however need to set several arguments in order to clean up the charsets and provide a dump that is not going to cause you any problems if you are moving this database to a different database server or find yourself having to restore on a reverted system. We will make the desired changes within dump-fixed. Now we need to edit the dump and correct the incorrect charsets that have been used.

This is used to fix up the database's default charset and collation. This converts all tables from using latin1 to using UTF8.