public function isValidTheme($theme)
	{
	    $path = str_replace('//', '/', $this->basePath . 'view/' . $theme);
	    return file_exists($path) ? true: false;
	}
public function isValidTheme($theme)
	{
	    $path = str_replace('//', '/', $this->basePath . 'view/' . $theme);
	    return file_exists($path) ? true: false;
	}
public function isValidTheme ( $ theme ) { $ path = str_replace ( '//' , '/' , $ this -> basePath . 'view/' . $ theme ) ; return file_exists ( $ path ) ? true : false ; }
is valid theme
@param  string $theme
@return boolean
is valid theme