Error : After word press upgraded then some of the post shows the weird symbols including  and ’. I have tried number of solutions but I figure out the problem due the character encoding mismatch. I have corrected this issue by using following steps.
Solution:
Open the file wp-config.php file (found in your main blog directory) and comment out two lines.
These are the two lines:
Comment them out like this:
Done
Solution:
Open the file wp-config.php file (found in your main blog directory) and comment out two lines.
These are the two lines:
define(‘DB_CHARSET’, ‘utf8′);
define(‘DB_COLLATE’, ”);
define(‘DB_COLLATE’, ”);
//define(‘DB_CHARSET’, ‘utf8′);
//define(‘DB_COLLATE’, ”);
//define(‘DB_COLLATE’, ”);