First, I tried to migrate my databases with SQL Server Migration Assistant for MySql and it worked fine. But now, I have some problems with my code. I had this line on MYSQL version : $fct="SELECT * FROM `users` WHERE `USER` LIKE CONVERT( _utf8 '$LOGIN' USING latin1 ) COLLATE latin1_swedish_ci AND `PASS` LIKE CONVERT( _utf8 '$PASS'USING latin1 ) COLLATE latin1_swedish_ci"; This line worked fine but when i try to put this on my SQL Version i get : Error : SQLSTATE[42000]: [Microsoft][SQL Server Native Client 10.0][SQL Server]Incorrect syntax with the keyword 'mictest'. (which is my $LOGIN) I though it was a problem with "quotes" so I also tried this but it is not working : $fct="SELECT * FROM users WHERE USER LIKE CONVERT( _utf8 '$LOGIN' USING latin1 ) COLLATE latin1_swedish_ci AND PASS LIKE CONVERT( _utf8 '$PASS' USING latin1 ) COLLATE latin1_swedish_ci";