因此，当从我的网站上注册的商家订购产品时，我希望我的代码能够更新他们，同时将相同的电子邮件发送到我们公司的电子邮件地址。 当代码发送到我们公司的电子邮件地址时，不会发送给商家的邮件。 你能告诉我哪里可能是错的吗？谢谢。

请注意，电子邮件变量属于商家，主要是 Gmail 帐户。这可能是 gmail 的限制还是什么？

function mail_merchants_and_shoply($cart_code){
        $conn = $this -> connection;
        $merchant_sent = false;
        $shoply_sent = false;
        $query = mysqli_query($conn, "SELECT * FROM business_account ORDER BY business_id DESC")or die(mysqli_error($conn));
        while($row = mysqli_fetch_array($query)){
            $id = $row['business_id'];
            $stat = "NEW";
            $email = $row['email_add'];
            $name = $row['business_name'];
            $c_query = mysqli_query($conn, "SELECT * FROM cart_db WHERE business_id = '$id' AND cart_code = '".mysqli_real_escape_string($conn, $cart_code)."'")or die(mysqli_error($conn));
            $merchant_mail_body = "
NEW ORDER
";
            while($arr = mysqli_fetch_array($c_query)){
                $p_id = $arr['product_id'];
                $p_query = mysqli_query($conn, "SELECT * FROM products WHERE product_id = '$p_id'")or die(mysqli_error($conn));
                $p_arr = mysqli_fetch_array($p_query);
                $image = $p_arr['product_image1_url'];
                $price = $p_arr['product_price'];
                $name = $p_arr['product_name'];

                $image = "";

                $merchant_mail_body.="
$name
 
$image
 
 $price
";
            }
            $merchant_mail_body .="
";

            $mail_subject = "NEW SHOPLY ORDER";
            // $mailHead = implode("\r\n", ["MIME-Version:1.0","Content-type:text/html; charset =utf-8"]);

            $mailHead = "MIME-Version: 1.0" . "\r\n";
            $mailHead .= "Content-type:text/html;charset=UTF-8" . "\r\n";
            
            // Additional headers
            $mailHead .= 'From: Shoply' . "\r\n";
            if(mail($email, $mail_subject, $merchant_mail_body, $mailHead)){
                $merchant_sent = true;
            }

            $s_query = mysqli_query($conn, "SELECT * FROM cart_db WHERE cart_code = '".mysqli_real_escape_string($conn, $cart_code)."'")or die(mysqli_error($conn));
            $o_query = mysqli_query($conn, "SELECT * FROM orders WHERE order_code = '".mysqli_real_escape_string($conn, $cart_code)."'")or die(mysqli_error($conn));
            $o_arr = mysqli_fetch_array($o_query);
            $location = $o_arr['delivery_location'];
            $phone = $o_arr['delivery_phone'];
            $user_fname = $_SESSION['user_fname'];
            $shoply_mail_body = "
NEW ORDER
 FROM: $user_fname 

            
Address: $location
            
Phone Number: $phone
";
            // $f_arr = mysqli_fetch_array($s_query);
            // $customer_id = $f_arr['customer_id'];
            // $c_query = mysqli_query($conn, "SELECT * FROM customers WHERE customer_id= '$customer_id'")or die(mysqli_error($conn));
            // $c_arr[]
            

            
            while($row = mysqli_fetch_array($s_query)){
                $p_id = $row['product_id'];
                $p_query = mysqli_query($conn, "SELECT * FROM products WHERE product_id = '$p_id'")or die(mysqli_error($conn));
                $p_arr = mysqli_fetch_array($p_query);
                $image = $p_arr['product_image1_url'];
                $price = $p_arr['product_price'];
                $name = $p_arr['product_name'];
                $image = "";

                $shoply_mail_body.="
$name
 
$image
 
 $price
";
            }  
            $shoply_mail_body .="
";
            $email = "sales@shoply.ng";
            $mail_subject = "NEW SHOPLY ORDER";
            // $mail_head = implode("\r\n", ["MIME-Version:1.0","Content-type:text/html; charset =utf-8"]);

            $headers = "MIME-Version: 1.0" . "\r\n";
            $headers .= "Content-type:text/html;charset=UTF-8" . "\r\n";
            
            // Additional headers
            $headers .= 'From: Shoply' . "\r\n";


            if(mail($email, $mail_subject, $shoply_mail_body, $headers)){
                $shoply_sent = true;
            }

            if($merchant_sent && $shoply_sent){
                return true;
            }else{
                return false;
            }
        }
    }