Question

我有一个像这样的数组

Array
(
   [0] => Array
       (
        [PM] => 14
        [LD] => 578
        [TL] => 56
        [SC] => 67
        [PC] => 
       )
)

以上只是PC / PM / TL / LD的ID。然后，我将在数据库查询中使用它们来获取其电子邮件ID。

我想使用以下逻辑，我的电子邮件模板应该像这样工作 PC中的“To”和所有其余的CC'ed。

如果没有分配PC，则TL in in email all in cc
如果没有TL，那么LD in in email rest all in cc
如果没有LD，那么PM in in email rest all in cc
如果没有PM，那么SC in in email rest all in cc

另外，我想将电子邮件ID添加到数组中。所以如果我开始：

Array ( 
    [PC] => 
    [TL] => 1109 
    [LD] => 838 
    [PM] => 715,824,694 
    [SC] => 727
)

我将执行此SQL（$ user_sql）：

SELECT id,email
FROM   new_login 
WHERE  id IN (1109,838,715,824,694,727) 
AND    status = 1

输出：

Array ( 
    [694] => a@exateam.com 
    [715] => b@gmail.com 
    [727] => c@gmail.com 
    [824] => d@gmail.com 
    [838] => e@gmail.com 
    [1109] => m@gmail.com 
)

Answer 1

以下代码将：

根据双字母代码的优先顺序排列给定的ID;
创建一个ID列表，将多ID字符串拆分为单独的数组元素;
查询数据库以接收相应的电子邮件地址
将这些电子邮件地址存储在正确数组变量（ $ to 或 $ cc ）

您没有指定您使用的数据库引擎。此代码假定您使用mysqli，并且您有一个名为 $ con 的连接对象。代码的数据库部分未经测试。但它至少应该让你知道如何继续。

代码中的注释应该澄清发生了什么：

// Example data:
$data = Array (
   Array ("PM" => "715,824,694", "LD" => "838", "TL" => "1109", 
          "SC" => "727", "PC" => null)
);

// Define the priority order of the different two letter codes:
$order = array_flip(array("PC", "TL", "LD", "PM", "SC"));

// Iterate over the data
foreach ($data as $row) {
    // Order $row elements by priority and filter out empty values:
    $row = array_filter(array_merge($order, $row));
    // if nothing is left over, then skip this row
    if (count($row) == 0) continue;
    // Count the number of IDs in "TO" addressee:
    $to_count = count(explode(',', array_values($row)[0]));
    // Create one list of IDs and turn comma-separated items 
    // into separate array elements:
    $row = explode(',', implode(',', $row));
    // Initialise arrays that will receive the email addresses for TO / CC
    $to = array();
    $cc = array();
    // Retrieve email addresses from database.
    // You need a valid mysqli connection object: $con
    // Prepare SQL statement to avoid SQL injection, and produce
    // the right number of question marks in it:
    $query = "SELECT id,email FROM new_login WHERE status = 1
              AND id IN (" . implode(',', array_fill(0, count($row), '?')) . ") ";
    $stmt = $con->prepare($query) or die($con->error());
    // Bind the ID values to prepared SQL statement
    call_user_func_array(array($stmt, 'bind_param'), $row);
    // Execute SQL query
    $stmt->execute();
    // Fetch result into array
    $res = $stmt->get_result();
    while($email = $res->fetch_array(MYSQLI_ASSOC)) {
        // Check whether it concerns a TO or CC address:
        if (array_search($email["id"], $row) < $to_count) {
            $to[$email["id"]] = $email["email"];
        } else {
            $cc[$email["id"]] = $email["email"];
        }
    }
    $stmt->close();
    // use $to and $cc to send email
    // ...
}

PC / tl / sc / pm电子邮件的Codeigniter逻辑

1 个答案: