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jpm |
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<?php
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// declare(encoding='UTF-8');
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/**
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* Classe modèle spécifique à l'application, donc d'accés au données, elle ne devrait pas être appelée de l'extérieur.
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* Elle est abstraite donc doit obligatoirement être étendue.
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*
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* @category Php5
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* @package Referentiel
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* @author Jean-Pascal MILCENT <jpm@tela-botanica.org>
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* @copyright 2010 Tela-Botanica
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* @license http://www.cecill.info/licences/Licence_CeCILL_V2-fr.txt Licence CECILL
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* @license http://www.gnu.org/licenses/gpl.html Licence GNU-GPL
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* @version SVN: $Id$
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*/
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abstract class Dao {
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const ORDRE_ASCENDANT = 'ASC';
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const ORDRE_DESCENDANT = 'DESC';
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const HTTP_REQUETE_SEPARATEUR = '&';
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protected $distinction = '0';
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protected $limite_debut = null;
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protected $limite_nbre = null;
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protected $ordre = null;
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protected $url_jrest = null;
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public function __construct() {
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$this->url_jrest = Config::get('url_jrest');
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}
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//+----------------------------------------------------------------------------------------------------------------+
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// ACCESSEURS
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public function setDistinction($distinct) {
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$this->distinction = $distinct;
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}
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public function getDistinction() {
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return $this->distinction;
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}
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public function viderDistinction() {
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$this->distinction = null;
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}
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public function avoirLimitation() {
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$limitation = false;
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if (!is_null($this->limite_debut) && !is_null($this->limite_nbre)) {
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$limitation = true;
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}
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return $limitation;
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}
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public function setLimitation($limite_debut, $limite_nbre) {
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$this->limite_debut = $limite_debut;
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$this->limite_nbre = $limite_nbre;
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}
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public function getLimiteDebut() {
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return $this->limite_debut;
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}
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public function getLimiteNbre() {
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return $this->limite_nbre;
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}
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public function viderLimite() {
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$this->limite_debut = null;
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$this->limite_nbre = null;
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}
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public function addOrdre($champ, $trie = self::ORDRE_ASCENDANT) {
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if (!isset($this->ordre[$champ])) {
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if (self::ORDRE_ASCENDANT == $trie || self::ORDRE_DESCENDANT == $trie) {
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$this->ordre[$champ] = $trie;
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} else {
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$e = "La valeur pour le trie doit être : {self::ORDRE_ASCENDANT} ou {self::ORDRE_DESCENDANT}.";
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trigger_error($e, E_USER_WARNING);
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}
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} else {
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$e = "Le champ $champ existe déjà dans le tableau des ordres.";
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trigger_error($e, E_USER_WARNING);
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}
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}
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public function getOrdre() {
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$champs = array();
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foreach ($this->ordre as $champ => $trie) {
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$champs[] = "$champ $trie";
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}
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return implode(', ', $champs);
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}
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public function viderOrdre() {
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$this->ordre = null;
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}
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//+----------------------------------------------------------------------------------------------------------------+
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// MÉTHODES
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protected function envoyerRequeteConsultation($url) {
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$url = $this->traiterUrlParametres($url);
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$retour = $this->envoyerRequete($url, 'GET');
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return $retour;
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}
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protected function envoyerRequeteAjout($url, Array $donnees) {
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$retour = $this->envoyerRequete($url, 'PUT', $donnees);
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return $retour;
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}
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protected function envoyerRequeteModif($url, Array $donnees) {
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$retour = $this->envoyerRequete($url, 'POST', $donnees);
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return $retour;
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}
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protected function envoyerRequeteSuppression($url) {
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$retour = $this->envoyerRequete($url, 'DELETE');
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return $retour;
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}
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private function envoyerRequete($url, $mode, Array $donnees = array()) {
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$contenu = false;
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if ($mode != 'GET' && $mode != 'PUT' && $mode != 'POST' && $mode != 'DELETE') {
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$e = "Le mode de requête '$mode' n'est pas accepté!";
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trigger_error($e, E_USER_WARNING);
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} else {
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$contexte = stream_context_create(array(
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'http' => array(
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'method' => $mode,
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'header' => "Content-type: application/x-www-form-urlencoded\r\n",
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'content' => http_build_query($donnees, null, self::HTTP_REQUETE_SEPARATEUR))));
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$flux = @fopen($url, 'r', false, $contexte);
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if (!$flux) {
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$this->traiterEntete($http_response_header, $url);
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jpm |
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$e = "L'ouverture de l'url '$url' par la méthode HTTP '$mode' a échoué!";
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jpm |
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trigger_error($e, E_USER_WARNING);
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} else {
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// Informations sur les en-têtes et métadonnées du flux
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$entetes = stream_get_meta_data($flux);
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$this->traiterEntete($entetes, $url);
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// Contenu actuel de $url
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$contenu = stream_get_contents($flux);
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fclose($flux);
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}
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}
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$this->reinitialiser();
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return $contenu;
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}
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private function traiterUrlParametres($url) {
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$parametres = array();
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if (! is_null($this->getLimiteDebut())) {
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$parametres[] = 'start='.$this->getLimiteDebut();
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}
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if (! is_null($this->getLimiteNbre())) {
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$parametres[] = 'limit='.$this->getLimiteNbre();
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}
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if (! is_null($this->ordre)) {
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$parametres[] = 'orderby='.urlencode($this->getOrdre());
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}
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if ($this->getDistinction() != 0) {
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$parametres[] = 'distinct='.$this->getDistinction();
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}
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if (count($parametres) > 0) {
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$url_parametres = implode('&', $parametres);
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$url = $url.'?'.$url_parametres;
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}
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return $url;
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}
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private function traiterEntete($entetes, $uri) {
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$infos = $this->analyserEntete($entetes, $uri);
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$this->traiterEnteteDebug($infos);
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$this->traiterEnteteMessage($infos);
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}
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private function analyserEntete($entetes, $uri) {
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$infos = array('date' => null, 'uri' => $uri, 'debugs' => null, 'messages' => null);
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if (isset($entetes['wrapper_data'])) {
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$entetes = $entetes['wrapper_data'];
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}
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foreach ($entetes as $entete) {
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if (preg_match('/^X-DebugJrest-Data: (.+)$/', $entete, $match)) {
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$infos['debugs'] = json_decode($match[1]);
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}
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if (preg_match('/^X-MessageJrest-Data: (.+)$/', $entete, $match)) {
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$infos['messages'] = json_decode($match[1]);
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}
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if (preg_match('/^Date: .+ ([012][0-9]:[012345][0-9]:[012345][0-9]) .*$/', $entete, $match)) {
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$infos['date'] = $match[1];
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}
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}
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return $infos;
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}
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private function traiterEnteteDebug($entetes) {
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if (isset($entetes['debugs'])) {
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$date = $entetes['date'];
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$uri = $entetes['uri'];
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$debugs = $entetes['debugs'];
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foreach ($debugs as $debug) {
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Debug::printr("DEBUG : $date - $uri :\n$debug");
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}
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}
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}
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private function traiterEnteteMessage($entetes) {
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if (isset($entetes['messages'])) {
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$date = $entetes['date'];
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$uri = $entetes['uri'];
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$messages = $entetes['messages'];
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foreach ($messages as $message) {
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Debug::printr("MESSAGE : $date - $uri :\n$message");
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}
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}
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}
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private function reinitialiser() {
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$this->viderDistinction();
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$this->viderLimite();
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$this->viderOrdre();
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}
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}
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