function register_compiler_function($function, $function_impl, $cacheable=true)
	{
		$this->_plugins['compiler'][$function] =
		array($function_impl, null, null, false, $cacheable);
	}
function register_compiler_function($function, $function_impl, $cacheable=true)
	{
		$this->_plugins['compiler'][$function] =
		array($function_impl, null, null, false, $cacheable);
	}
function register_compiler_function ( $ function , $ function_impl , $ cacheable = true ) { $ this -> _plugins [ 'compiler' ] [ $ function ] = array ( $ function_impl , null , null , false , $ cacheable ) ; }
Registers compiler function

@param string $function name of template function
@param string $function_impl name of PHP function to register
Registers compiler function