public function set_var( $key, $value ) {
		if ( null === $this->wp_query->get( $key, null ) ) {
			$this->vars[ $key ] = $value;
			$this->wp_query->set( $key, $value );
		}
	}
public function set_var( $key, $value ) {
		if ( null === $this->wp_query->get( $key, null ) ) {
			$this->vars[ $key ] = $value;
			$this->wp_query->set( $key, $value );
		}
	}
public function set_var ( $ key , $ value ) { if ( null === $ this -> wp_query -> get ( $ key , null ) ) { $ this -> vars [ $ key ] = $ value ; $ this -> wp_query -> set ( $ key , $ value ) ; } }
Sets a variable

@param string $key
@param mixed $value
@return void
Sets a variable