I think there was something wrong with my initial code like you said – but the main thing I lacked was an understanding of the meaning of these constants and functions. The error messages didn’t make sense.

The best explanation I came across was in the big bible of “MySQL Developer’s Library” 4th edition by Paul DuBois. He has a whole section pp 398-400, “7.4.5 mysql_store_result() vs. mysql_use_result()” dedicated to explaining the differences between the two – and how to use them in different examples.

Basically “store” retrieves the whole result set, allocating memory for all rows and buffers them on the client side, whereas “use” doesn’t retrieve any rows at all – you need to use fetch_row to do row by row retrieval.

Anyways – glad I found your blog – keep it up!

I believe the issus is the $qPicks->close(); inside your while. Basically you are closing the connection when returning your first result therefore you can’t return any other results. I would first try commenting that line out (right after where you create your $symbol) and see if that fixes this. If not, let me know and I’ll be glab to keep looking. Also, what error are you getting?

For others that are interested, hope this example helps…

// Connect to server and database
$mysqli = new mysqli(“$dbServer”, “$dbUser”, “$dbPass”, “$dbName”);

// Open First Stored Procedure using MYSQLI_STORE_RESULT to retain for looping
$resultPicks = $mysqli->query(“CALL $proc ($searchDate, $maxRSI, $incRSI, $minMACD, $minVol, $minTrades, $minClose, $maxClose)”, MYSQLI_STORE_RESULT);

// process one row at a time from first SP
while($picksRow = $resultPicks->fetch_array(MYSQLI_ASSOC)) {
// Get Parameter for next SP
$symbol = $picksRow['Symbol'];

// Free stored results
clearStoredResults($mysqli);

// Execute second SP using value from first as a parameter (MYSQLI_USE_RESULT and free result right away)
$resultData = $mysqli->query(“CALL prcGetLastMACDDatesBelowZero(‘$symbol’, $searchDate)”, MYSQLI_USE_RESULT);
$dataRow = $resultData->fetch_array(MYSQLI_ASSOC);

// Dump result from both related queries
echo “$symbol … Num Dates: ” . $dataRow['NumDates'];

// Free results from second SP
$resultData->free();

}

// Free results from first SP
$resultPicks->free();

// close connections
$mysqli->close();

#——————————————
function clearStoredResults($mysqli_link){
#——————————————
while($mysqli_link->next_result()){
if($l_result = $mysqli_link->store_result()){
$l_result->free();
}
}
}

?>

Played with free_result and close, but no luck using mysqli. Queries work great individually, but not when I try to use another one back to back.

Do you have any ideas?

Here’s the code that comes back with error now:

// First find all matches
$qPicks = $mysqli->query(“CALL $proc ($searchDate, $maxRSI, $incRSI, $minMACD, $minVol, $minTrades, $minClose, $maxClose)”);

// process one row at a time
while($pick = $qPicks->fetch_array(MYSQLI_ASSOC)) {
$symbol = $pick['Symbol'];
$qPicks->close();

$qData = $mysqli->query(“CALL prcGetLastMACDDatesBelowZero(‘$symbol’, $searchDate)”); //, MYSQLI_USE_RESULT
$data = $qData->fetch_array(MYSQLI_ASSOC);
echo “$symbol … Num Dates: ” . $data['NumDates'];
$qData->close();

}

// close connections
$mysqli->close();

Thanks for any suggestions
Don

It was really helpful.

My Query is …is any way i can change the output array format

FROM

[
stdClass Object
(
[users_id] => 1
[first_name] => Joey
[last_name] => Rivera
)
stdClass Object
(
[users_id] => 2
[first_name] => John
[last_name] => Doe
)

]

TO

ARRAY
(
[users_id] => 1
[users_id] => 2
)

ARRAY
(
[first_name] => Joey
[first_name] => John
)

Thanks,
Dharan V

God bless You always and I’ll be frequently visit your site to learn more.