PDOStatement::rowCount
Returns the number of rows affected by the last SQL statement
&reftitle.description;
intPDOStatement::rowCount
PDOStatement::rowCount returns the number of
rows affected by the last DELETE, INSERT, or UPDATE statement
executed by the corresponding PDOStatement object.
If the last SQL statement executed by the associated
PDOStatement was a SELECT statement, some databases
may return the number of rows returned by that statement. However, this
behaviour is not guaranteed for all databases and should not be relied
on for portable applications.
&reftitle.examples;
Return the number of deleted rows
PDOStatement::rowCount returns the number of
rows affected by a DELETE, INSERT, or UPDATE statement.
prepare('DELETE FROM fruit');
$del->execute();
/* Return number of rows that were deleted */
print("Return number of rows that were deleted:\n");
$count = $del->rowCount();
print("Deleted $count rows.\n");
?>
]]>
&example.outputs;
Counting rows returned by a SELECT statement
For most databases, PDOStatement::rowCount does not
return the number of rows affected by a SELECT statement. Instead, use
PDO::query to issue a SELECT COUNT(*) statement
with the same predicates as your intended SELECT statement, then use
PDOStatement::fetchColumn to retrieve the number
of rows that will be returned. Your application can then perform the
correct action.
100";
if ($res = $conn->query($sql)) {
/* Check the number of rows that match the SELECT statement */
if ($res->fetchColumn() > 0) {
/* Issue the real SELECT statement and work with the results */
$sql = "SELECT name FROM fruit WHERE calories > 100";
foreach ($conn->query($sql) as $row) {
print "Name: " . $row['NAME'] . "\n";
}
}
/* No rows matched -- do something else */
else {
print "No rows matched the query.";
}
}
$res = null;
$conn = null;
?>
]]>
&example.outputs;
&reftitle.seealso;
PDOStatement::columnCount
PDOStatement::fetchColumn
PDOStatement::query