ランダムに一つ結果を返すSQL
メモ程度
$sql = 'SELECT * FROM `table` WHERE 1 ORDER BY RAND() LIMIT 1';
$query = mysql_query($sql, $this->db);
$obj = mysql_fetch_object($query);
メモ程度
$sql = 'SELECT * FROM `table` WHERE 1 ORDER BY RAND() LIMIT 1';
$query = mysql_query($sql, $this->db);
$obj = mysql_fetch_object($query);