<?php
$tab = array('VILLE1', 'VILLE2', 'VILLE3', 'VILLE4', 'VILLE5', 'VILLE6');
$fp = fopen('crypto.txt', 'w');
for ($i = 0 ; $i < count($tab) ; $i++) {
    for ($j = 0 ; $j < count($tab) ; $j++) {
        if ($j != $i) {
            for ($k = 0 ; $k < count($tab) ; $k++) {
                if ($k != $i && $k != $j) {
                    for ($l = 0 ; $l < count($tab) ; $l++) {
                        if ($l != $i && $l != $j && $l != $k) {
                            for ($m = 0 ; $m < count($tab) ; $m++) {
                                if ($m != $i && $m != $j && $m != $k && $m != $l) {
                                    for ($n = 0 ; $n < count($tab) ; $n++) {
                                        if ($n != $i && $n != $j && $n != $k && $n != $l && $n != $m) {
                                                $texte = $tab[$i].$tab[$j].$tab[$k].$tab[$l].$tab[$m].$tab[$n];
                                                $lettre_1 = substr($texte, 47, 1);
                                                $lettre_2 = substr($texte, 26, 1);
                                                $lettre_3 = substr($texte, 31, 1);
                                                $lettre_4 = substr($texte, 22, 1);
                                                $lettre_5 = substr($texte, 7, 1);
                                                $lettre_6 = substr($texte, 15, 1);
                                                $lettre_7 = substr($texte, 49, 1);
                                                $resultat = $lettre_1.$lettre_2.$lettre_3.$lettre_4.$lettre_5.$lettre_6.$lettre_7;
                                                fwrite($fp, $resultat."\n");
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}
fclose($fp);
unset($tab);
?>