Since some drivers don't like to perform certain queries with the default setting of the dynamic cursor, it might be nice to use something like "odbc_setoption" to manually change the type of Statement that the SQL will be prepared on.  Problem is, currently when changing a statement option this way (argument of "2" for SQLSetStmtOption), you have to already have prepared a SQL statement:

	$result = odbc_prepare ($conn, $sql);
	odbc_setoption ($result, 2, 6, 3);
	odbc_execute ($result);  

This implicitly sets the statement option to set a dynamic cursor first, as the following ODBC trace shows:

SQLAllocStmt hDbc=DBD0002
phstmt=40073138
SQLAllocStmt: returning SQL_SUCCESS

SQLGetInfo hDbc=DBD0002
fInfoType=8 rgbInfoValue=7B03CD68 cbInfoValueMax=4 pcbInfoValue=0
SQLGetInfo: returning SQL_SUCCESS

SQLSetStmtOption hStmt=DBD0003
fOption=6 vParam=00000002
SQLSetStmtOption: returning SQL_SUCCESS_WITH_INFO

SQLPrepare hStmt=DBD0003
szSqlStr=400746F8 cbSqlStr=-3
  [SELECT target.description, target_data.layer1_key,target_data.layer2_key, target_data.layer3_key,target_data.layer4_key,target_data.layer5_key,target_data.layer6_key,target_data.company_code,target_data.location_code FROM dw_user_targets  JOIN target ON target.target_code = dw_user_targets.target_code JOIN target_data ON target_data.target_code = dw_user_targets.target_code AND target_data.company_code=2 AND target_data.year=1998 AND target_data.period_no=7 WHERE dw_user_targets.dw_userid='mark']
SQLPrepare: returning SQL_ERROR

Here's sample script that could reproduce the above.  (Just substitute the above query and connect to a Progress 8.3B database with a similar schema to get even closer)

<?
putenv("ODBCINI=/usr/local/openlink/odbc.ini");
$dsn="DSN=OracleLocal"; // this is a valid DSN set up in the above odbc.ini file, tested in odbctest
$user="scott"; //default user for the demo Oracle database
$password="tiger"; //default password for demo Oracle database
 
$sql="SELECT * FROM EMP";  
// directly execute mode 
if ($conn_id=odbc_connect("$dsn","","")){
    echo "connected to DSN: $dsn";
    if($result=odbc_prepare($conn_id, $sql)) {
         odbc_execute($result)
    }else{
        echo "can not execute '$sql' ";
    }
    echo "closing connection $conn_id";
    odbc_close($conn_id);
}else{
    echo "cannot connect to DSN: $dsn ";
}
?>

So, I propose making a new prepare function such as "odbc_prepare_clean" which doesn't do the implicit SetStmtOption(2,6) for the dynamic cursor.  There shouldn't be a problem without the implicit SetStmtOption as the driver will default to what it supports anyway.

E.g:
	$result = odbc_prepare_clean ($conn, $sql);
	odbc_setoption ($result, 2, 6, 3);
	odbc_execute ($result);