PHP中关联数组和foreach的处理

我正在尝试为我的邮件系统编写一个通用函数

我计划做的是

获取数组中的所有地址值和所需信息

将所有值存储在数据库中

我从二维关联数组开始，但无法检索foreach中的值

最后，foreach echo语句应该如下

insert into my_table('name','to_address','subject','message','add_cc') values ('Author1','author1@gmail.com','Subject','Message','test@gmail.com');
insert into my_table('name','to_address','subject','message','add_cc') values ('Author2','author2@gmail.com','Subject','Message','test@gmail.com');
insert into my_table('name','to_address','subject','message','add_cc') values ('Author3','author3@gmail.com','Subject','Message','test@gmail.com');

下面是我的代码，我知道问题在于foreach循环。即使关联数组在没有像[0]、[1]、[2]这样的数字序列的情况下最小化，我也会很高兴

<?php
$to_address = array(
    array( 'Name' => "Author1", 'Email' => 'author1@gmail.com' ),
    array( 'Name' => "Author2",  'Email' => 'author2@gmail.com' ),
    array( 'Name' => "Author3", 'Email' => 'author3@gmail.com')
);

$subject = "Subject";
$message = "Message";
$add_cc  = "test@gmail.com";
sendMail($to_address,$subject,$message,$add_cc);

function sendMail($to_address,$subject,$message,$add_cc) {
    foreach ($to_address as $key => $val) {
        foreach ($val as $key1 => $val1) {
            print_r($val1);
        }
    }
}

?>

谢谢， 金兹

编辑：

---

换句话说，我无法循环$to_地址值，我需要帮助。

这就是您想要的吗？您只需使用一个foreach并将每个数组放入

INSERT

    $to_address = array(
        array( 'Name' => "Author1", 'Email' => 'author1@gmail.com' ),
        array( 'Name' => "Author2",  'Email' => 'author2@gmail.com' ),
        array( 'Name' => "Author3", 'Email' => 'author3@gmail.com')
    );

    $subject = "Subject";
    $message = "Message";
    $add_cc  = "test@gmail.com";
    sendMail($to_address,$subject,$message,$add_cc);

function sendMail($to_address,$subject,$message,$add_cc) {
          foreach ($to_address as $val) {
              $sql = "INSERT INTO my_table('name','to_address','subject','message','add_cc') 
                      VALUES ('".$val['Name']."','".$val['Email']."','".$subject."','".$message ."','".$add_cc."');";
              echo $sql . "<br>";
              //Use your Insert Statement
          }
}

$to_address=数组(
数组（'Name'=>'Author1'，'Email'=>'author1@gmail.com' ),
数组（'Name'=>'Author2'，'Email'=>'author2@gmail.com' ),
数组（'Name'=>“Author3”，'Email'=>'author3@gmail.com')
);
$subject=“subject”；
$message=“message”；
$add_cc=”test@gmail.com";
sendMail（$to_address、$subject、$message、$add_cc）；
函数sendMail（$to\u address、$subject、$message、$add\u cc）{
foreach（$to_地址为$val）{
$sql=“插入我的表格（'name'、'to\u address'、'subject'、'message'、'add\u cc'）
值（“$val['Name'.]”、“$val['Email'.]”、“$subject.”、“$message.”、“$add_cc.”）和“；”；
echo$sql。“
”；
//使用Insert语句
}
}

您可以在单个foreach中检索值：

function sendMail($to_address,$subject,$message,$add_cc){

    foreach ($to_address as $val) {
       $name = $val["Name"];
       $email = $val["Email"];
       echo "Name: $name, Email: $email <br\>\n";
    }
}

函数sendMail（$to\u address、$subject、$message、$add\u cc）{
foreach（$to_地址为$val）{
$name=$val[“name”]；
$email=$val[“email”]；
echo“Name:$Name，Email:$Email\n”；
}
}

这就是你想要的吗

$link = mysqli_connect('localhost', 'my_user', 'my_password', 'my_db');

foreach ($to_address as $val) {

$sql = "insert into my_table('name','to_address','subject','message','add_cc') values (?,?,?,?,?)";
$stmt = mysqli_prepare($link, $sql);
mysqli_stmt_bind_param($stmt, $val['Name'], $val['Email'], $subject, $message, $add_cc);
);

mysqli_query($link, $sql);
}

先说

• 使用能告诉我变量内部内容的名称。像$val=>$key这样的东西什么都不告诉我。 也不使用foreach（$valas$key1=>$val1）
• 缩进：使用它，看看psr-*
• 再次描述正在发生的事情。sendMail函数应发送电子邮件。不打印查询

解决方案 评论 我调用了parseMail函数，因为我认为您不想打印insert语句。随你怎么说

你似乎也不知道foreach是如何工作的。玩一下，看看

$key=>$val

是什么意思

---

我还将foreach移出了该函数。这使它更便于移植和阅读。

以下是您需要的代码- 这将创建所需的插入查询

<?php
$to_address = array( array( 'Name' => "Author1", 'Email' => 'author1@gmail.com' ),
array( 'Name' => "Author2",  'Email' => 'author2@gmail.com' ),
array( 'Name' => "Author3", 'Email' => 'author3@gmail.com')
);
$subject = "Subject";
$message = "Message";
$add_cc  = "test@gmail.com";
sendMail($to_address,$subject,$message,$add_cc);

function sendMail($to_address,$subject,$message,$add_cc){

    foreach ($to_address as $key => $val) {
        $sqlStatement =  "INSERT INTO my_table('name','to_address','subject','message','add_cc') VALUES ('".$val['Name']."','".$val['Email']."','".$subject."','".$message ."','".$add_cc."');";
        echo "$sqlStatement <br/>";
    }
}
?>

---

简单的数组访问有什么问题？你只需要名字和地址。你所知道的是，数组可能有大量的键值，我只是喜欢使用extract，因为代码变得更可读，变量也变得自解释。是的，它将变得单调乏味，使用数组与吨的关键
$mailReceivers = array(
    array( 'Name' => "Author1", 'Email' => 'author1@gmail.com' ),
    array( 'Name' => "Author2",  'Email' => 'author2@gmail.com' ),
    array( 'Name' => "Author3", 'Email' => 'author3@gmail.com')
);

$subject = "Subject";
$message = "Message";
$add_cc  = "test@gmail.com";

foreach ( $mailReceivers as $receiver )
{
    parseMail($reciever['Name'], $reciever['Email'], $subject, $message, $add_cc);
}

function parseMail($name, $email, $subject, $message, $cc)
{
    print 'INSERT INTO my_table ('name','to_address','subject','message','add_cc') VALUES ('. $name .', '. $email .', '. $subject .', '. $message .', '. $subject .')';
}

<?php
$to_address = array( array( 'Name' => "Author1", 'Email' => 'author1@gmail.com' ),
array( 'Name' => "Author2",  'Email' => 'author2@gmail.com' ),
array( 'Name' => "Author3", 'Email' => 'author3@gmail.com')
);
$subject = "Subject";
$message = "Message";
$add_cc  = "test@gmail.com";
sendMail($to_address,$subject,$message,$add_cc);

function sendMail($to_address,$subject,$message,$add_cc){

    foreach ($to_address as $key => $val) {
        $sqlStatement =  "INSERT INTO my_table('name','to_address','subject','message','add_cc') VALUES ('".$val['Name']."','".$val['Email']."','".$subject."','".$message ."','".$add_cc."');";
        echo "$sqlStatement <br/>";
    }
}
?>