merci pour la réponce je vais changer mais c'est bizarre cette fonction fonctionne avec d'autre tableau du meme genre

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$code = "abcdefghijklmnopqrstuvwxyz";
$plan = strtr($code, 'abcdefghijklmnopqrstuvwxyz', 'xylophneabcdfgijkmqrstuvwz');

La fonction que tu recherches est [url=http://fr2.php.net/manual/fr/function.strtr.php]strtr[/url](). str_replace() peut agir sur la même lettre plusieurs fois d'affilée, par ex: x -> a -> i

[php]$code = "abcdefghijklmnopqrstuvwxyz";
$plan = strtr($code, 'abcdefghijklmnopqrstuvwxyz', 'xylophneabcdfgijkmqrstuvwz');[/php]
Attention à la casse, majuscules != minuscules

$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);

bonjour à tous j'ai un script avec une fonction str_replace qui me fait pas ce que j'attend d'elle

la voici
[php]$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);[/php]

la sortie est [code]vwdijegeabcdfgijkmqrstuvwz[/code]
au lieu de [code]xylophneabcdfgijkmqrstuvwz[/code]

merci beaucoup pour votre aide

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