Joomla 1.6 外部 PHP 交互问题

2022-01-06 00:00:00 php joomla joomla-extensions joomla1.6

我是 Joomla 的新手，我正在改编我为 v1.5 编写的外部 php 类.没有详细介绍，基本上，我使用一个函数来加载 Joomla 环境，之后 Joomla 中的所有内容都可供类使用.这基本上是使用 index.php 文件完成的.

I am new to working with Joomla and I am adapting an external php class I wrote for v1.5. Without going into all the details, basically, I use a function to load the Joomla environment after which everything in Joomla is available to the class. This is essentially done using the index.php file.

它在 v1.5 上运行良好，并且已经运行了一段时间，但在尝试将其调整为 v1.6 时，它失败了.

It works fine with v1.5 and has done for a while but trying to adapt it for v1.6, it falls over.

这是函数:

    private function loadJoomla() {
        $path_base = rtrim($this->joomFullPath, '/');

        // Set flag that this is a parent file
        define( '_JEXEC', 1 );
        define( 'DS', DIRECTORY_SEPARATOR );

        switch ($joomlaVersion) {
            case 'v1.6':
                if (file_exists($path_base . '/defines.php')) {
                    include_once $path_base . '/defines.php';
                }
                if (!defined('_JDEFINES')) {
                    define('JPATH_BASE', $path_base);
                    require_once JPATH_BASE.'/includes/defines.php';
                }
                require_once JPATH_BASE.'/includes/framework.php';

                // Mark afterLoad in the profiler.
                JDEBUG ? $_PROFILER->mark('afterLoad') : null;

                // Instantiate the application.
                $app = JFactory::getApplication('site');

                // Initialise the application.
                $app->initialise();

                // Mark afterIntialise in the profiler.
                JDEBUG ? $_PROFILER->mark('afterInitialise') : null;

                // Route the application.
                $app->route();

                // Mark afterRoute in the profiler.
                JDEBUG ? $_PROFILER->mark('afterRoute') : null;

                // Dispatch the application.
                $app->dispatch();

                // Mark afterDispatch in the profiler.
                JDEBUG ? $_PROFILER->mark('afterDispatch') : null;

                // Render the application.
                $app->render();

                // Mark afterRender in the profiler.
                JDEBUG ? $_PROFILER->mark('afterRender') : null;

                // Return the response.
                return $app;
            break;
            case 'v1.5':
                // PREPARE
                define('JPATH_BASE', $path_base);
                require_once ( JPATH_BASE .DS.'includes'.DS.'defines.php' );
                require_once ( JPATH_BASE .DS.'includes'.DS.'framework.php' );
                JDEBUG ? $_PROFILER->mark( 'afterLoad' ) : NULL;

                // CREATE THE APPLICATION
                $GLOBALS['mainframe'] =& JFactory::getApplication('site');

                // INITIALISE THE APPLICATION
                /* set the language */
                $GLOBALS['mainframe']->initialise();
                JPluginHelper::importPlugin('system');
                /* trigger the onAfterInitialise events */
                JDEBUG ? $_PROFILER->mark('afterInitialise') : NULL;
                $GLOBALS['mainframe']->triggerEvent('onAfterInitialise');

                // ROUTE THE APPLICATION
                $GLOBALS['mainframe']->route();
                /* authorization */
                $GLOBALS['Itemid'] = JRequest::getInt( 'Itemid');
                $GLOBALS['mainframe']->authorize($GLOBALS['Itemid']);
                /* trigger the onAfterRoute events */
                JDEBUG ? $_PROFILER->mark('afterRoute') : NULL;
                $GLOBALS['mainframe']->triggerEvent('onAfterRoute');

                // DISPATCH THE APPLICATION
                $GLOBALS['option'] = JRequest::getCmd('option');
                $GLOBALS['mainframe']->dispatch($GLOBALS['option']);
                /* trigger the onAfterDispatch events */
                JDEBUG ? $_PROFILER->mark('afterDispatch') : NULL;
                $GLOBALS['mainframe']->triggerEvent('onAfterDispatch');

                // RENDER  THE APPLICATION
                $GLOBALS['mainframe']->render();
                /* trigger the onAfterRender events */
                JDEBUG ? $_PROFILER->mark('afterRender') : NULL;
                $GLOBALS['mainframe']->triggerEvent('onAfterRender');

                // RETURN THE RESPONSE
                return JResponse::toString($GLOBALS['mainframe']->getCfg('gzip'));
            break;
            default:
                return NULL;
            break;
        }

如前所述，v1.5 位工作正常，只是 index.php 文件，大型机变量设为全局.v1.6 位在 '$app->dispatch();' 处失败.

As said, the v1.5 bit works fine and is just the index.php file with the mainframe variable made global. The v1.6 bit falls over at '$app->dispatch();'.

使用 'die' 调试流程使我在/libraries/joomla/application.php 中执行函数调度，在那里我发现失败点是 '$contents = JComponentHelper::renderComponent($component);'这让我在/libraries/joomla/application/component/helper.php 中运行 renderComponent

Debugging the flow using 'die' took me to function dispatch in /libraries/joomla/application.php where I found that the fall over point was '$contents = JComponentHelper::renderComponent($component);' which took me to function renderComponent in /libraries/joomla/application/component/helper.php

几次死亡"后，我发现跌倒点是，等待它，ob_start();".完全困惑，尤其是在检查 v1.5 代码后，我可以看到它与 v1.6 完全相同.

A few 'dies' later, I found the fall over point to be, wait for it, 'ob_start();'. Completely baffled especially since checking in v1.5 code, I can see it is exactly the same as v1.6 here.

我怀疑 $app 作用域可能是这背后的原因，希望得到一些帮助.我尝试了明显的$GLO​​BALS['app']"并没有任何乐趣.

I suspect the $app scope may be the reason behind this and will appreciate some help. I tried the obvious "$GLOBALS['app']" with no joy.

感谢您抽出宝贵时间和指点.

Thanks for taking the time and pointers appreciated.

推荐答案

我设法解决了这个问题，如下所示.

I managed to solve this problem as follows.

发生了两个不同的问题.

There were two separate issues happening.

首先，v1.6 部分没有正确初始化$option"参数.感谢 这个查询中的用户 hbit，我能够解决这个问题.通过如下更改代码:

Firstly, The v1.6 section did not have the "$option" parameter properly initialised. Thanks to user hbit in this query I made, I was able to solve that. by changing the code as follows:

// Dispatch the application.
$option = JRequest::getCmd('option');
$app->dispatch($option);

然而，这并没有解决问题，代码仍然在ob_start"点崩溃.

However, that did not solve the issue and the code was still crashing at the 'ob_start' point.

其次，我无法找到崩溃的实际原因，但寻求了解决方法.由于有问题的 ob_start 位位于/libraries/joomla/application/component/helper.php，仅用于将组件输出收集到变量中，因此我通过提取 '$app->dispatch($option)' 触发到我的文件并修改了问题部分.

Secondly, I couldn't get to the actual reason for the crash but went for a workaround. Since the ob_start bit in question, located in /libraries/joomla/application/component/helper.php, is only there to gather a component output into a variable, I worked around it by pulling the code that '$app->dispatch($option)' fires into my file and amended the problem section.

首先，我将主要部分修改如下:

First, I modified the main section as follows:

// Dispatch the application.
$option = JRequest::getCmd('option');
/** The process crashes here for some reason 
* (See https://stackoverflow.com/questions/7039162/).
* So we comment out the Joomla! function, pull the code in here and 
* push the component content into the Joomla document buffer ourselves.
**/
//$app->dispatch($option);
$this->joomdispatch($option);

然后我写了一个'joomdispatch'函数如下:

I then wrote a 'joomdispatch' function as follows:

private function joomdispatch($option) {
    /************************
     * This is pulled from function 'render' 
     * in /libraries/joomla/application.php
     ************************/
    $document = JFactory::getDocument();
    $document->setTitle(JApplication::getCfg('sitename'). ' - ' .JText::_('JADMINISTRATION'));
    $document->setDescription(JApplication::getCfg('MetaDesc'));

    /************************
     * This is pulled from function 'renderComponent' 
     * in /libraries/joomla/application/component/helper.php
     * Function 'renderComponent' is called by the
     * '$contents = JComponentHelper::renderComponent($component);' line
     * We exclude that line and jump to the function code
     ************************/

    // Initialise variables.
    $app = JFactory::getApplication();

    // Load template language files.
    $template   = $app->getTemplate(true)->template;
    $lang = JFactory::getLanguage();
    $lang->load('tpl_'.$template, JPATH_BASE, null, false, false)
        ||  $lang->load('tpl_'.$template, JPATH_THEMES."/$template", null, false, false)
        ||  $lang->load('tpl_'.$template, JPATH_BASE, $lang->getDefault(), false, false)
        ||  $lang->load('tpl_'.$template, JPATH_THEMES."/$template", $lang->getDefault(), false, false);

    $scope = $app->scope; //record the scope
    $app->scope = $option;  //set scope to component name

    // Build the component path.
    $option = preg_replace('/[^A-Z0-9_.-]/i', '', $option);
    $file   = substr($option, 4);

    // Define component path.
    define('JPATH_COMPONENT',               JPATH_BASE.DS.'components'.DS.$option);
    define('JPATH_COMPONENT_SITE',          JPATH_SITE.DS.'components'.DS.$option);
    define('JPATH_COMPONENT_ADMINISTRATOR', JPATH_ADMINISTRATOR.DS.'components'.DS.$option);

    // get component path
    if ($app->isAdmin() && file_exists(JPATH_COMPONENT.DS.'admin.'.$file.'.php')) {
        $path = JPATH_COMPONENT.DS.'admin.'.$file.'.php';
    } else {
        $path = JPATH_COMPONENT.DS.$file.'.php';
    }

    $task = JRequest::getString('task');

    // Load common and local language files.
    $lang->load($option, JPATH_BASE, null, false, false)
        ||  $lang->load($option, JPATH_COMPONENT, null, false, false)
        ||  $lang->load($option, JPATH_BASE, $lang->getDefault(), false, false)
        ||  $lang->load($option, JPATH_COMPONENT, $lang->getDefault(), false, false);

    // Handle template preview outlining.
    $contents = null;

    // Get component html
    /************************
     * This has been edited from the native 'ob_start'.
     * Could use curl as well
      ***********************/
    $contents = file_get_contents($this->joomUrl . '/index.php?' . $this->joomQS);

    // Build the component toolbar
    jimport('joomla.application.helper');

    if (($path = JApplicationHelper::getPath('toolbar')) && $app->isAdmin()) {
        // Get the task again, in case it has changed
        $task = JRequest::getString('task');

        // Make the toolbar
        include_once $path;
    }

    $app->scope = $scope; //revert the scope

    /************************
     * Back to function 'renderComponent' code
     * to complete process
     ************************/
    $document->setBuffer($contents, 'component');

    // Trigger the onAfterDispatch event.
    JPluginHelper::importPlugin('system');
    JApplication::triggerEvent('onAfterDispatch');
}

有了这个，一切正常.没有找到(奇怪的)错误的根源，但设法绕过它.

With this, everything works fine. Didn't get to the bottom of the (strange) error but managed to get around it.

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