(PHP 5 >= 5.1.0, PHP 7, PECL pdo >= 0.1.0)
PDOStatement::rowCount — Returns the number of rows affected by the last SQL statement
public PDOStatement::rowCount ( ) : int
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.
Note:
This method returns "0" (zero) with the SQLite driver at all times, and with the PostgreSQL driver only when setting the
PDO::ATTR_CURSORstatement attribute toPDO::CURSOR_SCROLL.
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.
<?php
/* Delete all rows from the FRUIT table */
$del = $dbh->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");
?> The above example will output something similar to:
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 matching rows.
<?php $sql = "SELECT COUNT(*) FROM fruit WHERE calories > 100"; $res = $conn->query($sql); $count = $res->fetchColumn(); print "There are " . $count . " matching records.";
The above example will output something similar to:
There are 2 matching records.
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https://www.php.net/manual/en/pdostatement.rowcount.php