static function AppendToFile($file,$content,&$error = null,&$error_str = null){
		return Files::WriteToFile($file,$content,$error,$error_str,array("file_open_mode" => "a"));
	}
static function AppendToFile($file,$content,&$error = null,&$error_str = null){
		return Files::WriteToFile($file,$content,$error,$error_str,array("file_open_mode" => "a"));
	}
static function AppendToFile ( $ file , $ content , & $ error = null , & $ error_str = null ) { return Files :: WriteToFile ( $ file , $ content , $ error , $ error_str , array ( "file_open_mode" => "a" ) ) ; }
Appends content to the given file.

Opens a file in append mode and appends content to the end of it.

@param string $file name of the file to append the $content to
@param string $content
@param boolean &$error flag indicating that something went wrong
@param string &$error_str message describing the error
@return int number of bytes written to the file
Appends content to the given file .