${$field} = $field_;
                    //op�rateur inter-champ
                    $inter = "inter_0_" . $search[0];
                    global ${$inter};
                    ${$inter} = "";
                    //variables auxiliaires
                    $fieldvar_ = "fieldvar_0_" . $search[0];
                    global ${$fieldvar_};
                    ${$fieldvar_} = "";
                    $fieldvar = ${$fieldvar_};
                } else {
                    searcher_title::convert_simple_multi_unimarc($_SESSION["CURRENT"]);
                }
                break;
            case "1":
                searcher_subject::convert_simple_multi_unimarc($_SESSION["CURRENT"]);
                break;
            case "3":
                searcher_publisher::convert_simple_multi_unimarc($_SESSION["CURRENT"]);
                break;
        }
    } else {
        if ($external_env) {
            $external_env = unserialize(stripslashes($external_env));
            foreach ($external_env as $varname => $varvalue) {
                global ${$varname};
                ${$varname} = $varvalue;
            }
        }
    }
} else {
 function make_unimarc_query()
 {
     global $search;
     //Récupération de la valeur de saisie
     $valeur_ = "field_" . $this->n_ligne . "_s_" . $this->id;
     global ${$valeur_};
     $valeur = ${$valeur_};
     if (!$this->is_empty($valeur)) {
         //enregistrement de l'environnement courant
         $this->search->push();
         //Récupération et mise en variables globales des valeurs de l'historique
         if ($_SESSION["session_history"][$valeur[0]]["QUERY"]["POST"]["search"][0]) {
             $search = $_SESSION["session_history"][$valeur[0]]["QUERY"]["POST"]["search"];
             //Pour chaque champ
             for ($i = 0; $i < count($search); $i++) {
                 //Récupération de l'opérateur
                 $op = "op_" . $i . "_" . $search[$i];
                 global ${$op};
                 ${$op} = $_SESSION["session_history"][$valeur[0]]["QUERY"]["POST"][$op];
                 //Récupération du contenu de la recherche
                 $field_ = "field_" . $i . "_" . $search[$i];
                 global ${$field_};
                 ${$field_} = $_SESSION["session_history"][$valeur[0]]["QUERY"]["POST"][$field_];
                 $field = ${$field_};
                 //Récupération de l'opérateur inter-champ
                 $inter = "inter_" . $i . "_" . $search[$i];
                 global ${$inter};
                 ${$inter} = $_SESSION["session_history"][$valeur[0]]["QUERY"]["POST"][$inter];
                 //Récupération des variables auxiliaires
                 $fieldvar_ = "fieldvar_" . $i . "_" . $search[$i];
                 global ${$fieldvar_};
                 ${$fieldvar_} = $_SESSION["session_history"][$valeur[0]]["QUERY"]["POST"][$fieldvar_];
                 $fieldvar = ${$fieldvar_};
             }
         } else {
             if (!$_SESSION["session_history"][$valeur[0]]["NOTI"]["GET"]["idcaddie"]) {
                 switch ($_SESSION["session_history"][$valeur[0]]["NOTI"]["GET"]["mode"]) {
                     case 0:
                         searcher_title::convert_simple_multi($valeur[0]);
                         break;
                     case 1:
                         searcher_subject::convert_simple_multi($valeur[0]);
                         break;
                     case 2:
                         searcher_publisher::convert_simple_multi($valeur[0]);
                         break;
                 }
             } else {
                 $op_ = "EQ";
                 $valeur_champ = $_SESSION["session_history"][$valeur[0]]["NOTI"]["GET"]["idcaddie"];
                 $search[0] = "f_11";
                 //opérateur
                 $op = "op_0_" . $search[0];
                 global ${$op};
                 ${$op} = $op_;
                 //contenu de la recherche
                 $field = "field_0_" . $search[0];
                 $field_ = array();
                 $field_[0] = $valeur_champ;
                 global ${$field};
                 ${$field} = $field_;
                 //opérateur inter-champ
                 $inter = "inter_0_" . $search[0];
                 global ${$inter};
                 ${$inter} = "";
                 //variables auxiliaires
                 $fieldvar_ = "fieldvar_0_" . $search[0];
                 global ${$fieldvar_};
                 ${$fieldvar_} = "";
                 $fieldvar = ${$fieldvar_};
             }
         }
         //on instancie la classe search avec le nom de la nouvelle table temporaire
         if ($_SESSION["session_history"][$valeur[0]]["QUERY"]["POST"]["search"][0]) {
             $sc = new search(false);
         } else {
             $sc = new search(false, "search_simple_fields");
         }
         $mt = $sc->make_unimarc_query();
         //restauration de l'environnement courant
         $this->search->pull();
         return $mt;
     }
 }