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PDOStatement->nextRowset
(PHP 5 >= 5.1.0, PECL pdo >= 0.2.0)
PDOStatement->nextRowset — Advances to the next rowset in a multi-rowset statement handle
Beschreibung
Some database servers support stored procedures that return more than one rowset (also known as a result set). PDOStatement::nextRowset() enables you to access the second and subsequent rowsets associated with a PDOStatement object. Each rowset can have a different set of columns from the preceding rowset.
Rückgabewerte
Gibt bei Erfolg TRUE zurück. Im Fehlerfall wird FALSE zurückgegeben.
Beispiele
Beispiel #1 Fetching multiple rowsets returned from a stored procedure
The following example shows how to call a stored procedure, MULTIPLE_ROWSETS, that returns three rowsets. We use a do / while loop to loop over the PDOStatement::nextRowset() method, which returns false and terminates the loop when no more rowsets can be returned.
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$sql = 'CALL multiple_rowsets()';
$stmt = $conn->query($sql);
$i = 1;
do {
$rowset = $stmt->fetch(PDO::FETCH_NUM);
if ($rowset) {
printResultSet($rowset, $i);
}
$i++;
} while ($stmt->nextRowset());
function printResultSet(&$rowset, $i) {
print "Result set $i:\n";
foreach ($rowset as $row) {
foreach ($row as $col) {
print $col . "\t";
}
print "\n";
}
print "\n";
}
Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
Result set 1: apple red banana yellow Result set 2: orange orange 150 banana yellow 175 Result set 3: lime green apple red banana yellow
Siehe auch
- PDOStatement::columnCount() - Returns the number of columns in the result set
- PDOStatement::execute() - Executes a prepared statement
- PDOStatement::getColumnMeta() - Returns metadata for a column in a result set
- PDO::query() - Executes an SQL statement, returning a result set as a PDOStatement object