php - Database error when accessing $_SERVER variable in Codeigniter -

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i'm using codeigniter , i'm trying echo $_server['http_referer']. whenever tried access $_server variable i'm getting database error.

a database error occurred  unable select specified database: my_db_name  filename: core/loader.php  line number: 346

is codeigniter restriction or bug.

so, can use :

$this->load->library('user_agent'); echo $this->agent->referrer();

read also: http://ellislab.com/codeigniter/user-guide/libraries/user_agent.html


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