テスト用

create_user.php

@@ -16,7 +16,7 @@ $user -> inheritance_code = implode (array_map (fn () => rand (0, 9), range (1,
 
 $user -> insert ();
 
-echo [$user -> id,
+echo implode (',', [$user -> id,
                     $user -> pass,
-      $user -> inheritance_code];
+                    $user -> inheritance_code]);
 

modules/chat.mod.php

@@ -3,9 +3,9 @@
 class
 Chat
 {
-  var $id;
+  public int    $id;
-  var $user_id;
+  public int    $user_id;
-  var $pass;
+  public string $pass;
 
   function
   insert ():

modules/user.mod.php

@@ -3,10 +3,10 @@
 class
 User
 {
-  var $id;
+  public int    $id;
-  var $name;
+  public string $name;
-  var $pass;
+  public string $pass;
-  var $inheritance_code;
+  public string $inheritance_code;
 
   public static function
   find (
@@ -44,11 +44,13 @@ User
             name,
             pass,
             inheritance_code,
-            created_at)
+            created_at,
+            modified_at)
           VALUES
             ('{$this -> name}',
              '{$this -> pass}',
              '{$this -> inheritance_code}',
+             NOW(),
              NOW())";
     $GLOBALS['__db_connection'] -> query ($sql)
         or die ("db_insert error $sql");