PHP.如何传递变量和自动重定向到另一个 PHP 文件 [英] PHP. How to pass variable and auto redirect to another PHP file

问题描述

我正在为 Facebook 开发应用程序.此处应检查用户打开应用程序时是否数据库中已存在用户.我想我会使用 $_SESSION 将 user's Id 传递给 checkIfExsists.php

I'm developing app for Facebook. Here when user open application should be checked If user already exists in database. I think I will use $_SESSIONto pass user's Id to checkIfExsists.php

所以我的 FacebookGetId.php 看起来像:

So my FacebookGetId.php looks like:

<?php
...
$id = $user_profile['id'];
$_SESSION['id'] = $id;
?>

所以 $id 现在是 '12345' 我只是不知道如何自动重定向到 checkIfExsists.php检查该 ID 是否已存在于数据库中.

So $id for now is i.e. '12345' I just don't know how to make automatically redirect to checkIfExsists.php to check If that Id already exsists in database.

它应该是这样的:当应用程序启动时，它应该获取用户的 ID 并自动重定向到 checkIfExsists.php 并传递该 ID.

It should be something like: When application is launched, It should take User's Id and automatically redirect to checkIfExsists.phpand pass that Id.

如果用户存在 checkIfExsists.php 应该将用户重定向到 application.php，如果不存在 - 它应该重定向到 registration.php

If user exists checkIfExsists.php should redirect user to application.php, if not exists - It should redirect to registration.php

推荐答案

使用 header 函数

<?php
...
$id = $user_profile['id'];
$_SESSION['id'] = $id;
header('Location: checkIfExsists.php?id='.$id);
?>

在 checkIfExsists.php 上获取变量

on the checkIfExsists.php get the variable with

$id = $_GET["id"];

这会以您希望解决的方式解决您的问题，但是，这并不是它应该解决的方式，也许在 checkIfExists.php 内部应该是一个类而不是具有公共功能的结构化代码来检查存在 checkExistance，所以你只需要:

That would solve your problem the way you want it to be solved, but, this isn´t neccesarilly the way it should be solved, maybe inside checkIfExists.php should be a class instead of structured code with a public function to check existance checkExistance, so you will then just need:

include_once(checkIfExists.php);
$check = new checker();
$exists = $check->checkExistance($id) ;

这样你就不必在文件之间跳转，你可以有一个更好的方法来重用代码，问候.

this way you do not have to be jumping between files and you can have a better way to re-use code, regards.

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