我正试图从Joomla 2.5.14中获取当前的page_id、user_id和日期。这是我正在使用的代码：
<?php
$foo = $jinput->get('id');
echo $foo;
$user =& JFactory::getUser();
$usr_id = $user->get('id');
echo $usr_id;
$date =& JFactory::getDate();
echo 'Current date and time is: ' . $date->toFormat() . "'n";
?>
JFactory工作正常（我得到了当前用户和日期），但jinput给出了错误：
Notice: Undefined variable: jinput in`
您忘记定义$jinput:
<?php
$jinput = JFactory::getApplication()->input;
$foo = $jinput->get('id');
echo $foo;
$user = JFactory::getUser();
$usr_id = $user->get('id');
echo $usr_id;
$date = JFactory::getDate();
echo 'Current date and time is: ' . $date->toFormat() . "'n";
?>
附带说明一下，您不需要使用&。
希望这能帮助