src/Library/Session/Session.php
public function has($param)
    {
        if ( ! $this->isOpened()) {
            $this->start();
        }
        return isset($this->attributes[$param]);
    }
public function has($param)
    {
        if ( ! $this->isOpened()) {
            $this->start();
        }
        return isset($this->attributes[$param]);
    }
public function has ( $ param ) { if ( ! $ this -> isOpened ( ) ) { $ this -> start ( ) ; } return isset ( $ this -> attributes [ $ param ] ) ; }
Test if the current session has a parameter

@param string $param
@return bool
Test if the current session has a parameter