Hi. Just started using PDO with the nice and shiny SQLSRV driver form Microsoft for SQL Server. I seem to be having an issue with named parameters in prepared statements. Are there limitations to the characters that can be used for named parameters. UPPER, lower and MixedCase all seem OK, but I think I'm messing up with _. And my brain JUST fired and told me _ is a single character wildcard (as when used within a LIKE statement). Can anyone confirm? The usernote http://www.php.net/manual/en/pdo.prepared-statements.php#97162 mentions the use of hyphen (-), but not underscore (_). I'm also going to be converting an old style coding mysql to mysqli prepared statements (I know very little mysql, so 2 lots of learning going on here). Would mysqli have the same behaviour? Is it driver specific? Regards, Richard. -- Richard Quadling Twitter : EE : Zend : PHPDoc @RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY : bit.ly/lFnVea -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php