ajax请求后PHP中的变量丢失

Question

我的目标 - 通过条带或贝宝付款，一旦完成，向客户提供表格以上传文件以通过电子邮件发送给我。我的表单处于引导模式。我正在努力确保除非付款，否则无法提交表格。客户当前付款，由 ajax 完成。这可以正常工作，并且会显示一个付款 ID。但是，当我向同一个 php 文档发送另一个 ajax 请求以完成电子邮件发送时，使用$send_form = $_POST["email_form"];，该变量$payment_made已丢失其值。<?php$send_form = $_POST["email_form"]; //this is sent by ajax. Will be 'yes' if the form to send has been submitted.switch ($action){  case 'stripe':    //do stripe transaction    //set a variable to indicate payment is complete using transaction ID    $payment_made = $transaction->id;  break;  case 'paypal':    //do paypal transaction    //set a variable to indicate payment is complete using transaction ID    $payment_made = $transaction->id;  break;}function sendmail() {  //usual php mail function (works fine)}if ($send_form = 'yes' && $payment_made != '') {  sendmail();}?>我的问题：如何使用$payment_made变量来验证付款是否已完成，以防止未经授权使用电子邮件表单？除非有要求，否则我不会上传 ajax 或 html 代码，因为只要我$payment_made在使用phpmail().

Answer 1

我使用 PHP 会话来存储然后删除变量。

<?php

session_start();

$send_form = $_POST["email_form"]; //this is sent by ajax. Will be 'yes' if the form to send has been submitted.

switch ($action){

  case 'stripe':

    //do stripe transaction

    //set a variable to indicate payment is complete using transaction ID

    $_SESSION["payment_made"] = $transaction->id;

  break;

  case 'paypal':

    //do paypal transaction

    //set a variable to indicate payment is complete using transaction ID

    $_SESSION["payment_made"] = $transaction->id;

  break;

}

function sendmail() {

  //usual php mail function (works fine)

  session_unset();

  session_destroy();

  mail();

}

if ($send_form = 'yes' && $_SESSION["payment_made"] != '') {

  sendmail(); 

}

?>