php - MySQL递归在哪里？

Question

我有一个如下所示的数据库:

Token (PRIMARY)     School        Skip
--------------------------------------
f2342f              School 1      0
434fbc              School 1      0
33332c              School 1      0

如果学校与临时数据库匹配，我的 PHP 代码会向每个 token 发送推送通知。然后它将 skip 设置为 1，这样它就不会在一天内尝试发送另一个通知。

问题是我不能让脚本一次设置多个跳过值。当我这样做时，它似乎对第一个标记工作正常，但随后不会为其他标记设置跳过值，然后就死掉了。

这是我的 PHP:

// Run comparison SQL query
        $compare = mysql_resultTo2DAssocArray(mysql_query("SELECT Temp.School, Temp.Status, Snow.Skip, GROUP_CONCAT(Snow.Token SEPARATOR '\', \'') Tokens FROM Temp JOIN Snow USING (School) WHERE Skip = 0 GROUP BY Temp.School"), $con);
        $amount = count($compare);

        // Send Push Notifications
        for ($i = 0; $i < $amount; $i++) {
            $message = $compare[$i][School] . " - " . $compare[$i][Status];
            $tokens = $compare[$i][Tokens];
            pwCall( 'createMessage', array(
                'application' => PW_APPLICATION,
                'username' => PW_LOGIN,
                'password' => PW_PASSWORD,
                'notifications' => array(
                    array(
                        'send_date' => 'now',
                        'content' => $message,
                        'ios_badges' => 1,
                        'ios_sound' => 'bells.caf',
                        'data' => 'daily',
                        'devices' => array($tokens),
                        )
                    )
                )
            );
            if (!mysql_query("UPDATE Snow SET Skip='1' WHERE Token='$tokens[$i]'", $con)) {

                echo "<pre>";
                print_r(str_replace("'", '', $tokens));
                echo "</pre>";

                die('Error: ' . mysql_error());
            }
        }

输出为:

f2342f, 434fbc, 33332c Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' 'f2342f', '434' at line 1

所以对我来说，我似乎需要递归地设置跳过，除非我的代码遗漏了一些重要的东西。

$比较:

Array
(
    [0] => Array
        (
            [School] => School 1
            [Status] => Closed 
            [Skip] => 0
            [Tokens] => f2342f', '434fbc', '33332c
        )

)

Answer 1

完成后:

$tokens = $compare[$i]['Tokens'];

$tokens 应该是这样的:

f2342f', '434fbc', '33332c

意味着您的查询应更改为

"UPDATE Snow SET Skip='1' WHERE Token IN('$tokens')"