从我的数据库中选择并发送邮件

Question

我正在尝试从 MySQL 数据库表中获取电子邮件列，然后向他们发送电子邮件。 以下是我的 PHP 代码：

private function sendEmailTech() {
$select = $this->pdo->prepare("SELECT email FROM tbl_tech_email");
try {
    $select->execute();
    $data = $select->fetch();
    foreach($data as $datum=>$email){
        if ($email == '') { 
            $rows.=$email.',';
        } else {
            return false;
        }
    $rows = str_replace(',--','',$rows);
    $to = explode(',', $rows); // to change to array
    mail($$rows, "My Info", "Hello, I just sent a mail to You");
    }
}
catch (PDOException $e) {            
    die($e->getMessage());
}

从 MySQL 表中选择列字段并向与该列关联的收件人发送电子邮件的正确方法是什么？

Answer 1

试试这样的：

<?php
    function sendEmailTech() {
        $select = $this->pdo->query("SELECT email FROM tbl_tech_email");
        $select = $select->fetchAll();
        if(count($select) > 0) {
            foreach($select AS $recipient) {
                mail($recipient["email"], "My Info", "Hello, I just sent a mail to You");
            }
        } else {
            echo "No user to send email";
            die();
        }
    }
    // sendEmailTech();
?>