如何在参数$ _GET中使用变量？例如：（$ _GET [$ my_var]） [英] How to use variable inside parameter $_GET? example: ($_GET[$my_var])

问题描述

我正在为wordpress开发一个插件，根据用户通过Wordpress管理面板的偏好将$ _GET的参数记录在数据库中。下面的验证必须通过$ _GET，这是一个函数：

  $ db_url = get_option（'my_get_url'）; 
 //返回用户输入的数据库的值
 //在这种情况下return  - > page = nosupport 
 
 $ url_explode = explode（=，$ db_url）; 
 $ url_before = $ url_explode [0]; //  - >页面
 $ url_after = $ url_explode [1]; //  - > nosupport 
 
 echoBefore：。$ url_before; //这里没关系，返回 - >页面
 echoAfter：。$ url_after; //这里没关系，返回 - >没有支持
  

我的问题在这里：

<$ p $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $' $ _GET ['$ url_before'] ==nosupport）{
// my function goes here ...
}
}

我使用测试参数：

  echo $ _GET [$ url_before]; 
  

但是不要返回任何值...

  $ _ GET [$ url_before] 
 $ _GET [$ url_before] 
  

问题已解决，感谢您的帮助。

I'm developing a plugin for wordpress, the parameter of the $ _GET is recorded in the database according to the preference of the User via the Wordpress Admin Panel. The following validation has to be via the $ _GET, this is the function:

$db_url = get_option('my_get_url');
// returns the value of the database entered by User
// on this case return -->  page=nosupport

$url_explode = explode("=", $db_url);
$url_before = $url_explode[0]; // --> page
$url_after = $url_explode[1]; // --> nosupport

echo "Before: ".$url_before; // here are ok, return --> page
echo "After: ".$url_after; // here are ok, return --> nosupport

My problem is here:

// here $_GET no have any value, dont work on validate...
if($_GET[$url_before] != ""){ 
    if($_GET['$url_before']=="nosupport"){
        // my function goes here...
    }
}

I using for test the parameter:

echo $_GET[$url_before];

But dont return any value...

解决方案

I found the problem, i had already tested all of these options, but ever dont working, the problem was that I was testing the function inside the main page of my site, and on the main page (mysite.com) does not get the parameter (?page=nossuport), so always returning null values​​, when I used the variable in the GET or used the echo $GET[$my_var] to test.. It was a great carelessness of mine, would never work...

by the way, the two parameters works correctly:

$_GET[$url_before]
$_GET["$url_before"]

The Problem are solved, Thanks for help.

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