turn this php setcookie("guilanguage", 'EN', 0, "/"); and setcookie("guilanguage", 'FR', 0, "/"); on the javascript cookie on the given code
if($_COOKIE["swithlanguage"]=="en"){
setcookie("guilanguage", 'EN', 0, "/");
}elseif($_COOKIE["swithlanguage"]=="fr_FR"){
setcookie("guilanguage", 'FR', 0, "/");
}else{
setcookie("guilanguage", 'FR', 0, "/");
}
if($_COOKIE["swithlanguage"]=="en"){
setcookie("guilanguage", 'EN', 0, "/");
}elseif($_COOKIE["swithlanguage"]=="fr_FR"){
setcookie("guilanguage", 'FR', 0, "/");
}else{
setcookie("guilanguage", 'FR', 0, "/");
}