la voici
$code = "abcdefghijklmnopqrstuvwxyz";
$trad2 = array ("x","y","l","o","p","h","n","e","a","b","c","d","f","g","i","j","k","m","q","r","s","t","u","v","w","z");
$plan=str_replace(array ("a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"),$trad2,$code);
la sortie est Code : Tout sélectionner
vwdijegeabcdfgijkmqrstuvwzCode : Tout sélectionner
xylophneabcdfgijkmqrstuvwzSpols