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src/Form/ViewState.php

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+<?php
+
+/** 
+ * http://www.alternateinterior.com/2006/09/a-viewstate-for-php.html
+ * Управление состоянием между страницами
+ */
+class ViewState // extends Collection
+{
+    private $values = array();
+
+    function set($name, $value) 
+    {
+        $this->values[$name] = $value;
+    }
+
+    function get() 
+    {
+        $args = func_get_args();
+        $result = $this->values;
+        foreach ($args as $name) {
+            if (!isset($result[$name])) {
+                return null;
+            }
+            $result = $result[$name];
+        }
+        return $result;
+    }
+
+    function saveState()
+    {
+        return base64_encode(serialize($this->values));
+    }
+
+    function restoreState($value)
+    {
+        $this->values = unserialize(base64_decode($value));
+    }
+
+    function export()
+    {
+        return $this->values;
+    }
+}