$text = preg_replace("#(^|[\r\n ]|^\])((www|ftp)\.[\w\#$%&~/.\-;:=,?@\[\]+]*)(|[\r\n ]|^\[)#si", "\\1<a href=\"http://\\2\" target=\"_blank\" title=\"autolink\"><img src=\"".$obrazek."\" alt=\"\" border=\"0\" /></a> ", $text);