What are some common pitfalls when modifying PHP code for Joomla plugins?

One common pitfall when modifying PHP code for Joomla plugins is not following Joomla coding standards, which can lead to errors or conflicts with other extensions. To avoid this, always refer to Joomla's coding guidelines and conventions when making changes to plugin code.

// Example of following Joomla coding standards for modifying PHP code in a plugin:

defined('_JEXEC') or die;

class plgContentExample extends JPlugin
{
    public function onContentPrepare($context, &$article, &$params, $page = 0)
    {
        // Your custom code here
    }
}