Index unidentified email [duplicate]

Solution 1:

The mysqli_num_rows() function returns the number of rows in a result set. For insert, update and delete use mysqli_affected_rows

Solution 2:

  mysql_num_rows ( resource $result )

Retrieves the number of rows from a result set. This command is only valid for statements like SELECT or SHOW that return an actual result set. To retrieve the number of rows affected by a INSERT, UPDATE, REPLACE or DELETE query, use . mysql_affected_rows() Like

if(mysql_affected_rows()) 
    {
        return $valueentered ;
    }
    else
    {
        false; 
    }