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Asked: 2026-05-25T22:19:59+00:00

: Call to a member function rowCount() on a non-object in C:\wamp\www\prjy\classes\user.php on line

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: Call to a member function rowCount() on a non-object in C:\wamp\www\prjy\classes\user.php on line 34

Line 29-32

$this->sth = $this->dbh->prepare("SELECT id, userlevel FROM users WHERE username = ? AND password = ?");
$this->sth->bindParam(1, $username);
$this->sth->bindParam(2, $password);
$this->data = $this->sth->execute();

Line 34

if ($this->data->rowCount() > 0)

I want to save the result object in another variable, so I can execute another query and depending on the result, I return what is correct… Can’t I save the result, (execute()) in a variable like above? How do I solve it else way?

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1 Answer

  1. Editorial Team

    PDOStatement::rowCount() returns the number of rows affected by the last DELETE, INSERT, or UPDATE statement executed by the corresponding PDOStatement object.

    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.

    Reference

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