页面内容中的Joomla PHP错误

Question

警告:参数3 showBlogSection()应该是一个引用,值在第100行的/home/smartsta/public_html/includes/Cache/Lite/Function.php中给出

我突然在我的Joomla网站上的内容区域显示上述错误,有什么建议吗？

更新: 没有这样的运气找到访问godaddy ftp文件目录,ftp或Joomal C面板中定义的文件和目录.在FTP中,我无法找到对此特定文件的访问权以调查第100行的内容.在Joomla面板中,在全局配置中,我能够将"错误消息"切换为无,因为至少要隐藏此错误.在缓存目录中,虽然显示,但我没有看到进入该文件夹的任何选项.我也在c-panel屏幕的底部看到这个,但只是链接到joomla帮助站点,并且在字段内我没有看到描述区域切换'ON或OFF'"以下PHP服务器设置不是最佳的安全性并建议更改它们:PHP register_globals设置ON而不是OFF "

UPDATE2 !:

我找到了有问题的文件,下面是代码.第100行仅说明:

global $$ object_123456789;

application/x-httpd-php Function.php PHP脚本文本

<?php

/**
* This class extends Cache_Lite and can be used to cache the result and output of functions/methods
*
* This class is completly inspired from Sebastian Bergmann's
* PEAR/Cache_Function class. This is only an adaptation to
* Cache_Lite
*
* There are some examples in the 'docs/examples' file
* Technical choices are described in the 'docs/technical' file
*
* @package Cache_Lite
* @version $Id: Function.php 47 2005-09-15 02:55:27Z rhuk $
* @author Sebastian BERGMANN <sb@sebastian-bergmann.de>
* @author Fabien MARTY <fab@php.net>
*/

// no direct access
defined( '_VALID_MOS' ) or die( 'Restricted access' );

require_once( $mosConfig_absolute_path . '/includes/Cache/Lite.php' );

class Cache_Lite_Function extends Cache_Lite
{

    // --- Private properties ---

    /**
    * Default cache group for function caching
    *
    * @var string $_defaultGroup
    */
    var $_defaultGroup = 'Cache_Lite_Function';

    // --- Public methods ----

    /**
    * Constructor
    *
    * $options is an assoc. To have a look at availables options,
    * see the constructor of the Cache_Lite class in 'Cache_Lite.php'
    *
    * Comparing to Cache_Lite constructor, there is another option :
    * $options = array(
    *    (...) see Cache_Lite constructor
    *    'defaultGroup' => default cache group for function caching (string)
    * );
    *
    * @param array $options options
    * @access public
    */
    function Cache_Lite_Function($options = array(NULL))
    {
        if (isset($options['defaultGroup'])) {
            $this->_defaultGroup = $options['defaultGroup'];
        }
        $this->Cache_Lite($options);
    }

    /**
    * Calls a cacheable function or method (or not if there is already a cache for it)
    *
    * Arguments of this method are read with func_get_args. So it doesn't appear
    * in the function definition. Synopsis :
    * call('functionName', $arg1, $arg2, ...)
    * (arg1, arg2... are arguments of 'functionName')
    *
    * @return mixed result of the function/method
    * @access public
    */
    function call()
    {
        $arguments = func_get_args();
        $id = serialize($arguments); // Generate a cache id
        if (!$this->_fileNameProtection) {
            $id = md5($id);
            // if fileNameProtection is set to false, then the id has to be hashed
            // because it's a very bad file name in most cases
        }
        $data = $this->get($id, $this->_defaultGroup);
        if ($data !== false) {
            $array = unserialize($data);
            $output = $array['output'];
            $result = $array['result'];
        } else {
            ob_start();
            ob_implicit_flush(false);
            $target = array_shift($arguments);
            if (strstr($target, '::')) { // classname::staticMethod
                list($class, $method) = explode('::', $target);
                $result = call_user_func_array(array($class, $method), $arguments);
            } else if (strstr($target, '->')) { // object->method
                // use a stupid name ($objet_123456789 because) of problems when the object
                // name is the same as this var name
                list($object_123456789, $method) = explode('->', $target);
                global $$object_123456789;
                $result = call_user_func_array(array($$object_123456789, $method), $arguments);
            } else { // function
                $result = call_user_func_array($target, $arguments);
            }
            $output = ob_get_contents();
            ob_end_clean();
            $array['output'] = $output;
            $array['result'] = $result;
            $this->save(serialize($array), $id, $this->_defaultGroup);
        }
        echo($output);
        return $result;
    }

}

?>

Answer 1

这不完全是一个错误.这是一个警告.

突然？也许您已升级/更新了PHP版本.或者将PHP配置更改为"严格模式".

消息" 期望是参考,给定值 "意味着期望接收引用而不是值的被调用函数.看:

$something = 9;
show_section($something);
// here you are passing a variable
// this will be accepted as a reference

show_section(9);
// here you are NOT passing a reference
// here you are passing a VALUE

当您通过"引用"时,该函数可以更改上面示例中的变量值...:

function show_section(&$parameter) {
    $parameter = 'changed!';
}

1. 注意&前面的&符号$parameter- 这就是我们指定一个函数需要REFERENCE的方法.

2. 在函数调用之后,在上面的示例中,变量$something值将是changed!字符串.

抛出错误的行不是"全局"行.这是下一个:

$result = call_user_func_array(array($$object_123456789, $method), $arguments);

这里的问题是使用"call_user_func_array"函数间接调用该函数.

解决方案是将所有参数转换为引用.建议:

foreach ($arguments as $count => $value)
{
    $param = 'param' . $count;
    $$param = $value;
    $arguments[$count] = &$$param;
}

把上面的代码中的开始call功能,右后以下行:

$id = serialize($arguments);

试一试!