After odbc_execute() call odbc_error doesn't return SQLSTATE (returns last occured SQLSTATE).

The cause is that SQL_ERROR return code of SQLExecute() is not processed.

Please change php_odbc.c near
-------------------------
/*
 * Execute prepared SQL statement. Supports only input parameters.
 */
/* {{{ proto int odbc_execute(int result_id [, array parameters_array])
   Execute a prepared statement */
PHP_FUNCTION(odbc_execute)
-------------------------



-------------------------
	rc = SQLExecute(result->stmt);

	result->fetched = 0;
	if (rc == SQL_NEED_DATA) {
		char buf[4096];
		int fp, nbytes;
		while(rc == SQL_NEED_DATA) {
			rc = SQLParamData(result->stmt, (void*)&fp);
			if (rc == SQL_NEED_DATA) {
				while((nbytes = read(fp, &buf, 4096)) > 0)
					SQLPutData(result->stmt, (void*)&buf, nbytes);
			}
		}
	} else {
        switch (rc) {
        case SQL_SUCCESS:
            break;
        case SQL_NO_DATA_FOUND:
        case SQL_SUCCESS_WITH_INFO:
            odbc_sql_error(result->conn_ptr, result->stmt, "SQLExecute");
            break;
        default:
            RETVAL_FALSE;
        }
	}	
-------------------------

==========>

-------------------------
	rc = SQLExecute(result->stmt);

	result->fetched = 0;
	if (rc == SQL_NEED_DATA) {
		char buf[4096];
		int fp, nbytes;
		while(rc == SQL_NEED_DATA) {
			rc = SQLParamData(result->stmt, (void*)&fp);
			if (rc == SQL_NEED_DATA) {
				while((nbytes = read(fp, &buf, 4096)) > 0)
					SQLPutData(result->stmt, (void*)&buf, nbytes);
			}
		}
	} else {
        switch (rc) {
        case SQL_SUCCESS:
            break;
        case SQL_NO_DATA_FOUND:
        case SQL_SUCCESS_WITH_INFO:
            odbc_sql_error(result->conn_ptr, result->stmt, "SQLExecute");
            break;
        default:
            odbc_sql_error(result->conn_ptr, result->stmt, "SQLExecute");
            RETVAL_FALSE;
        }
	}	
-------------------------

With best regards,
   Alexander Veremyev.