res/php/cairo/cairocontext.php
public function maskSurface($surface, $x = NULL, $y = NULL, $context, $surface, $x = NULL, $y = NULL)
    {
    }
public function maskSurface($surface, $x = NULL, $y = NULL, $context, $surface, $x = NULL, $y = NULL)
    {
    }
public function maskSurface ( $ surface , $ x = NULL , $ y = NULL , $ context , $ surface , $ x = NULL , $ y = NULL ) { }
The maskSurface purpose

@param string $surface
@param string $x
@param string $y
@param CairoContext $context
@param CairoSurface $surface
@param string $x
@param string $y

@return void Description...
The maskSurface purpose