$contenu = stripslashes($donnees['contenu'] );
$contenu = nl2br($contenu);

$smiley = array(':)',':-)',':(',':p',';)',':((',';-)',':-o',':|',':||',':-((',':o)');
$smileyig = array('<img src="smilies/sourire.gif">', '<img src="smilies/rire.gif">','<img src="smilies/fache.gif">','<img src="smilies/pleure.gif">','<img src="smilies/ok.gif">','<img src="smilies/colere.gif">','<img src="smilies/mouais.gif">','<img src="smilies/surpris.gif">','<img src="smilies/confus.gif">','<img src="smilies/gene.gif">','<img src="smilies/gros_nul.gif">','<img src="smilies/ange.gif">');

$contenu = str_replace($smiley, $smileyig, $contenu);

echo $contenu ;