mysqli_stmt_affected_rows mysqli_stmt->affected_rows Returns the total number of rows changed, deleted, or inserted by the last executed statement Procedural style : intmysqli_stmt_affected_rows mysqli_stmtstmt Object oriented style (property): mysqli_stmt intaffected_rows mysqli_stmt_affected_rows returns the number of rows affected by INSERT, UPDATE, or DELETE query. If the last query was invalid, this function will return -1. The mysqli_stmt_affected_rows function only works with queries which update a table. In order to return the number of rows from a SELECT query, use the mysqli_stmt_num_rows function instead. &reftitle.returnvalues; An integer greater than zero indicates the number of rows affected or retrieved. Zero indicates that no records where updated for an UPDATE/DELETE statement, no rows matched the WHERE clause in the query or that no query has yet been executed. -1 indicates that the query has returned an error. If the number of affected rows is greater than maximal PHP int value, the number of affected rows will be returned as a string value. &reftitle.seealso; mysqli_stmt_num_rows&listendand; mysqli_prepare. &reftitle.examples; query("CREATE TEMPORARY TABLE myCountry LIKE Country"); $query = "INSERT INTO myCountry SELECT * FROM Country WHERE Code LIKE ?"; /* prepare statement */ if ($stmt = $mysqli->prepare($query)) { /* Bind variable for placeholder */ $code = 'A%'; $stmt->bind_param("s", $code); /* execute statement */ $stmt->execute(); printf("rows inserted: %d\n", $stmt->affected_rows); /* close statement */ $stmt->close(); } /* close connection */ $mysqli->close(); ?> ]]> ]]> &example.outputs;