composer php5 安装 laravel 问题，急求解决办法？？？谢谢

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PHP Fatal error: Call to undefined method Illuminate\Foundation\Application::registerCoreContainerAliases() in /home/andy/Zend/workspaces/DefaultWorkspace/locallaravel/vendor/laravel/framework/src/Illuminate/Foundation/start.php on line 106
PHP Stack trace:
PHP 1. {main}() /home/andy/Zend/workspaces/DefaultWorkspace/locallaravel/artisan:0
PHP 2. require_once() /home/andy/Zend/workspaces/DefaultWorkspace/locallaravel/artisan:30
PHP 3. require() /home/andy/Zend/workspaces/DefaultWorkspace/locallaravel/bootstrap/start.php:60
Script php artisan clear-compiled handling the post-install-cmd event returned with an error

[RuntimeException]

Error Output: PHP Fatal error: Call to undefined method Illuminate\Foundation\Application::registerCoreContainerAliases() in /home/q

iulihua/Zend/workspaces/DefaultWorkspace/locallaravel/vendor/laravel/framework/src/Illuminate/Foundation/start.php on line 106

PHP Stack trace:

PHP 1. {main}() /home/andy/Zend/workspaces/DefaultWorkspace/locallaravel/artisan:0

PHP 2. require_once() /home/andy/Zend/workspaces/DefaultWorkspace/locallaravel/artisan:30

PHP 3. require() /home/andy/Zend/workspaces/DefaultWorkspace/locallaravel/bootstrap/start.php:60

查看代码是有这个函数的：
/**
* Register the core class aliases in the container.
*
* @return void
*/
public function registerCoreContainerAliases()
{
$aliases = array(
'app' => 'Illuminate\Foundation\Application',
'artisan' => 'Illuminate\Console\Application',
'auth' => 'Illuminate\Auth\AuthManager',
'auth.reminder.repository' => 'Illuminate\Auth\Reminders\ReminderRepositoryInterface',