problema foreach

[techno]

salve sto avendo dei problemi con foreach:

function textmessage($msg){
    
    $arricons= array("[>:(]"=>"images/guestbook/emoticons/emoticons0011.gif","[|:/]"=>"images/guestbook/emoticons/emoticons0012.gif","[8\]"=>"images/guestbook/emoticons/emoticons0013.gif","[=(]"=>"images/guestbook/emoticons/emoticons0014.gif");
    
}

foreach($arricons as $key => $valore){
    $text= str_replace($key,$valore,$msg);
}

return $text; 

Warning: Invalid argument supplied for foreach()