Php While循环仅显示一条记录

Question

我试图遍历数据库中的每条记录并更新行。 它有效，但一次只能一个。

    $con = mysql_connect('localhost', 'root', 'root');
    mysql_select_db('webinar', $con);       
    $result = mysql_query("SELECT * FROM register WHERE mon=0 AND 1hour=0 AND 10min=0 AND wed=0 AND complete=0");
        while ($row = mysql_fetch_assoc($result)) {
            echo $row['email'];
            $res = "UPDATE register SET mon=1 WHERE id=".$row['id']."";
            $result = mysql_query($res);
        }

Answer 1

赶紧跑

UPDATE register SET mon=1 WHERE mon=0 AND 1hour=0 AND 10min=0 AND wed=0 AND complete=0

例：

$result = mysql_query("SELECT id, email FROM register WHERE mon=0 AND 1hour=0 AND 10min=0 AND wed=0 AND complete=0");
while ($row = mysql_fetch_assoc($result)) {
    echo $row['email'];
}

 // now update!
 $result = mysql_query("UPDATE register SET mon=1 WHERE mon=0 AND 1hour=0 AND 10min=0 AND wed=0 AND complete=0");