Retrieving Multiple Result sets with stored procedure in php/mysqli

Answers of > Retrieving Multiple Result sets with stored procedure in php/mysqli

I have a stored procedure that has multiple w3coded procedure retrieving result sets. How do I advance to the 2nd result w3coded procedure retrieving set in mysqli to get those results?,I think w3coded procedure retrieving you're missing something here. This is how you w3coded procedure retrieving can get multiple results from stored procedure w3coded procedure retrieving using mysqli prepared statements:,PDO seems to w3coded procedure retrieving be somewhat more abstracted, with the w3coded procedure retrieving PDOStatement objects being able to handle w3coded procedure retrieving multiple result sets for both regular queries w3coded procedure retrieving (PDO::query) and prepared w3coded procedure retrieving statements(PDO:prepare)., w3coded procedure retrieving w3coded procedure retrieving Does the procedure w3coded procedure retrieving call return properly using mysqli_multi_query() w3coded procedure retrieving instead of a prepared statement? w3coded procedure retrieving – gapple w3coded procedure retrieving Nov 5 '09 at 21:44 w3coded procedure retrieving

I think you're missing something here. This is how you can get multiple results from stored procedure using mysqli prepared statements:

$stmt = mysqli_prepare($db, 'CALL multiples(?, ?)');
mysqli_stmt_bind_param($stmt, 'ii', $param1, $param2);
mysqli_stmt_execute($stmt);
// fetch the first result set
$result1 = mysqli_stmt_get_result($stmt);
// you have to read the result set here 
while ($row = $result1->fetch_assoc()) {
    printf("%d\n", $row['id']);
}
// now we're at the end of our first result set.

//move to next result set
mysqli_stmt_next_result($stmt);
$result2 = mysqli_stmt_get_result($stmt);
// you have to read the result set here 
while ($row = $result2->fetch_assoc()) {
    printf("%d\n", $row['id']);
}
// now we're at the end of our second result set.

// close statement
mysqli_stmt_close($stmt);

Using PDO your code would look like:

$stmt = $db->prepare('CALL multiples(:param1, :param2)');
$stmt->execute(array(':param1' => $param1, ':param2' => $param2));
// read first result set
while ($row = $stmt->fetch()) {
    printf("%d\n", $row['id']);
}
$stmt->nextRowset();
// read second result set
while ($row = $stmt->fetch()) {
    printf("%d\n", $row['id']);
}

This has worked really well for me, it will deal with (as an example) as many Select Lists as there are in your SP. Note how you have to close the $call BEFORE you can then get to the OUT parameters from your SP...

?><pre><?
$call = mysqli_prepare($db, 'CALL test_lists(?, ?, @result)');
if($call == false) {
    echo "mysqli_prepare (\$db, 'CALL test_lists(?, ?, @result) FAILED!!!\n";
} else {
    // A couple of example IN parameters for your SP...
    $s_1 = 4;
    $s_2 = "Hello world!";

    // Here we go (safer way of avoiding SQL Injections)...
    mysqli_stmt_bind_param($call, 'is', $s_1, $s_2);

    // Make the call...
    if(mysqli_stmt_execute($call) == false) {
        echo "mysqli_stmt_execute(\$call) FAILED!!!\n";
    } else {
        //print_r($call);

        // Loop until we run out of Recordsets...
        $set = 0;
        while ($recordset = mysqli_stmt_get_result($call)) {
            ++$set;
            //print_r($recordset);
            echo "\nRecordset #" . $set . "...\n";
            if ($recordset->num_rows > 0) {
                $ctr = 0;
                while ($row = $recordset->fetch_assoc()) {
                    ++$ctr;
                    //print_r($row);
                    echo "\t" . $ctr . ": ";
                    forEach($row as $key => $val) {
                        echo "[" . $key . "] " . $val . "\t";
                    }
                    echo "\n";
                }
            }
            echo $recordset->num_rows . " record" . ($recordset->num_rows == 1 ? "" : "s") . ".\n";
            // Clean up, ready for next iteration...
            mysqli_free_result($recordset);

            // See if we can get another Recordset...
            mysqli_stmt_next_result($call);
        }

        // Then you have to close the $call...
        mysqli_stmt_close($call);
        // ...in order to get to the SP's OUT parameters...
        $select = mysqli_query($db, "SELECT @result");
        $row = mysqli_fetch_row($select);
        $result = $row[0];
        echo "\nOUT @result = " . $result . "\n";
    }
}
?></pre><?

And this is what the output from the above code looks like using my test_lists SP...

Recordset #1...
    1: [s_1] 4  [user_name] Andrew Foster   
    2: [s_1] 4  [user_name] Cecil   
    3: [s_1] 4  [user_name] Sheff   
3 records.

Recordset #2...
    1: [s_2] Hello world!   [section_description] The Law   
    2: [s_2] Hello world!   [section_description] History   
    3: [s_2] Hello world!   [section_description] Wisdom Literature 
    4: [s_2] Hello world!   [section_description] The Prophets  
    5: [s_2] Hello world!   [section_description] The Life of Jesus and the Early Church    
    6: [s_2] Hello world!   [section_description] Letters from the Apostle Paul 
    7: [s_2] Hello world!   [section_description] Other Letters from Apostles and Prophets  
    8: [s_2] Hello world!   [section_description] Prophecy - warnings for the present and revelation of the future  
8 records.

OUT @result = 16

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