在 Java 中，我会使用以下内容:

In Java I would have used the following:

Statement stmt = connection.createStatement();
int rowsAffected = stmt.executeUpdate("UPDATE ...");

在 PHP 中，我相信 pg_affected_rows 是办法.在您的特定情况下 $this->db->affected_rows()

In PHP I believe pg_affected_rows is the way. And in your particular case $this->db->affected_rows()