IMPRESS dotted_line CONTACT dotted_line search dotted_line Kontakt dotted_line sitemap dotted_line print
92 PHP-Resource users online

Switch to another languags Deutsch aktuelle Sprache Englisch

PHP Manual


(PHP 5 >= 5.1.0, PECL pdo >= 0.1.0)

PDOStatement::rowCount Returns the number of rows affected by the last SQL statement


int PDOStatement::rowCount ( void )

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.

Return Values

Returns the number of rows.


Example #1 Return the number of deleted rows

PDOStatement::rowCount() returns the number of rows affected by a DELETE, INSERT, or UPDATE statement.

/* Delete all rows from the FRUIT table */
$del $dbh->prepare('DELETE FROM fruit');

/* Return number of rows that were deleted */
print("Return number of rows that were deleted:\n");
$count $del->rowCount();
"Deleted $count rows.\n");

The above example will output:

Return number of rows that were deleted:
Deleted 9 rows.

Example #2 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.

"SELECT COUNT(*) FROM fruit WHERE calories > 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) {
"Name: " .  $row['NAME'] . "\n";
/* No rows matched -- do something else */
else {
"No rows matched the query.";

$res null;
$conn null;

The above example will output:


See Also

Comments to the PHP manual
Write new comment


New Tutorial entries

Migration einer PHP 5 App auf PHP 7

Dieses PHP 7 Tutorial zeigt dir, wie du dein PHP5 Script auf PHP7 umstellst.

Berni | Category: PHP
PHP 7 Virtual Machine

Dieser Artikel zielt darauf ab, einen Überblick über die Zend Virtual Machine, wie es in PHP 7 gefunden wird.

Berni | Category: PHP
plotting masters - a professional guide - Teil II

Grafische Interpolation und Bestapproximation von numerischen Wertepaaren: Wir wollen Punkte auf einer Zeichenebene über verschiedene Verfahren miteinander verbinden.

EVAMasters | Category: PHP