Possible PDOException Errors (MySQL 5)?

The MySQL documentation is the complete reference for error codes.

Error codes starting at 1000 are server errors. These include errors like:

• Error: 1045 SQLSTATE: 28000 (ER_ACCESS_DENIED_ERROR) Message: Access denied for user '%s'@'%s' (using password: %s)

• Error: 1049 SQLSTATE: 42000 (ER_BAD_DB_ERROR) Message: Unknown database '%s'

Error codes starting at 2000 are client errors. These include errors like:

• Error: 2005 (CR_UNKNOWN_HOST) Message: Unknown MySQL server host '%s' (%d)

• Error: 2003 (CR_CONN_HOST_ERROR) Message: Can't connect to MySQL server on '%s' (%d)

I'm not going to list all possible errors, because they're already documented, and I don't know which ones you need to handle. For instance, errors 2001 and 2002 are specific to UNIX socket connections, which may be irrelevant to your target platform.

Don't forget to use PDO::errorCode() and PDO::errorInfo() instead of simply the PDOException message.

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Re your comment about getCode() -- No, it doesn't seem to be supported in that way. I did a quick test, to var_dump() a PDOException. Unfortunately, its code is simple "0" even though the error code and SQLSTATE are included in the exception message.

Exception::getCode() is part of the base Exception class, as of PHP version 5.1.0. It's up to the respective PDO driver implementation to utilize this object field. At least for the MySQL driver, they apparently didn't.