There’s a function name error in the URI Class documentation - the heading says assoc_to_uri but the function in the example is assoc_to_str.

$this->uri->assoc_to_uri()

Takes an associative array as input and generates a URI string from it. The array keys will be included in the string. Example:

$array = array(‘product’ => ‘shoes’, ‘size’ => ‘large’, ‘color’ => ‘red’);

$str = $this->uri->assoc_to_str($array);

Just caught this one myself and came here to report the bug - but you beat me to it (three months ago)

++ for user comment manual