Joomla错误:“非法变量_files或_env或_get或_post或_cookie或_server或_session或全局变量已传递给脚本"

问题描述

我在Joomla中遇到此错误:

I am getting this error in Joomla:

Illegal variable `_files` or `_env` or `_get` or `_post` or `_cookie`
or `_server` or `_session` or `globals` passed to script.

我在谷歌搜索方面没有太多帮助.

I didn't get much help googling.

推荐答案

如果您尝试指定名称仅由数字组成的URL参数，则会看到此错误.

You'll see this error if you try to specify a URL parameter whose name consists solely of digits, e.g.

http://www.example.com/?1234567=test

，或者如果您尝试使用保留joomla的变量，例如

or if you try to use a joomla-reserved variable, e.g.

http://www.example.com/?_files=test

这不是一个很好的错误消息.如果您可以访问Unix终端，则可以使用某些命令行工具来调试此类问题，例如

It's not a great error message. If you have access to a unix terminal, you can debug these kind of problems with some command-line tools, e.g.

$ find /var/www/html -exec grep -l 'Illegal variable' {} \;
/var/www/html/libraries/joomla/environment/request.php

这是一个虚构的joomla安装，假设是相当标准的DocumentRoot.结果立即确认这是一个Joomla错误，并报告导致该错误的文件.从该文件中提取:

This is a fictional joomla installation, assuming a fairly standard DocumentRoot. The result immediately confirms this is a Joomla error, and reports which file caused it. Extract from that file:

static $banned = array( '_files', '_env', '_get', '_post', '_cookie', '_server', '_session', 'globals' );

foreach ($array as $key => $value)
{
    // PHP GLOBALS injection bug
    $failed = in_array( strtolower( $key ), $banned );

    // PHP Zend_Hash_Del_Key_Or_Index bug
    $failed |= is_numeric( $key );

    if ($failed) {
        jexit( 'Illegal variable <b>' . implode( '</b> or <b>', $banned ) . '</b> passed to script.' );
    }
    ...
}

请注意，错误消息特别容易引起误解，因为不仅是在保留变量名的情况下，而且在参数名是数字的情况下，也会抛出该错误消息.

Note that the error message is particularly misleading because, not only is in thrown in the case of a reserved variable name, but also if the parameter name is numeric.

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