简单的数组foreach

Question

我确信这很简单......但我似乎无法弄明白.我需要向每个提到积分的电子邮件地址发送电子邮件.但这两封电子邮件都有36分.

$emails = $userTools->weeklyMail();

print_r的:

Array
(
    [0] => Array
        (
            [0] => email1@gmail.com
            [1] => 
            [2] => 36
        )

    [1] => Array
        (
            [0] => email2@gmail.com
            [1] => 
            [2] => 25
        )

)

环:

foreach($emails as $email)
{
        $email = $email[0];
        $subject = "You have ".$email[2]." points!!! !!!";
        // The message
        $message = "Hello\r\nYou have ".$email[2]." points .";
        $helperClass->sendEmail($email, $subject, $message);
}

Answer 1

您的问题是您覆盖了引用变量$email,这意味着$email[2]未定义.

改成:

foreach($emails as $email)
{
        // $email = $email[0]; You can't use $email[2] if $email is overwritten
        $subject = "You have ".$email[2]." points!!! !!!";
        // The message
        $message = "Hello\r\nYou have ".$email[2]." points .";
        $helperClass->sendEmail($email[0], $subject, $message);
}