Conversion to Drupal 7

lqdn_timeline.module

 <?php
-function lqdn_dossiers_block_list_alter(&$blocks) {
+/*
+ * Implements hook_block_info().
+ *
+ * This hook lists blocks to add/use.
+ */
+function lqdn_dossiers_block_info() {
+    $blocks = array();
     $result = db_query("SELECT `did`, `machine_name` FROM {lqdn_dossiers}");
-    while ($data = db_fetch_object($result)) {
+    foreach ($result as $data) {
       $blocks['timeline-' . $data->did]['info'] = t('Timeline of the dossier @dossier',
 						    array('@dossier' =>$data->machine_name));
     }
+    return $blocks;
 }
 
+/*
+ * Implements hook_block_view().
+ *
+ * This hook returns the content of block.
+ */
 function lqdn_dossiers_block_view($delta = '') {
-  global $language;
+    $block = array();
     $query = "
         SELECT d.`did`, d.`machine_name`, c.`name`, c.`language`
         FROM {lqdn_dossiers} d
         LEFT JOIN {lqdn_dossiers_contents} c
-        ON d.`did` = c.`did` AND c.`language` = '%s'
+        ON d.`did` = c.`did` AND c.`language` = :lang
     ";
-    $result = db_query($query, $language->language);
-    while ($data = db_fetch_object($result)) {
+    $result = db_query($query, array(":lang"=>$language->language));
+    foreach ($result as $data) {
         if ($delta == 'timeline-' . $data->did) {
             $block['subject'] = $data->name;
             $block['content'] = _lqdn_timeline_block($data);
             return $block;
         }
     }
+    return $block;
 }
 
 function _lqdn_timeline_block($_dossier) {
-  $query = "SELECT * FROM {lqdn_timeline} WHERE `did`='%d' AND `language`='%s'";
-  $result = db_query($query, $_dossier->did, $_dossier->language);
     $events = array();
-  while ($data = db_fetch_object($result))
+    $result = db_query("SELECT * FROM {lqdn_timeline} WHERE `did`=:did and `language`=:lang",
+        array(":did"=>$_dossier->did, ":lang"=>$_dossier->language)
+    );
+    foreach ($result as $data) {
         $events[] = $data;
-  
+    }
+    return $events;
 }
+