Added ArrayAccess object in EachValidator

Fixes #15760

tests/data/base/ArrayAccessObject.php

@@ -0,0 +1,84 @@
+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yiiunit\data\base;
+
+/**
+ * ArrayAccessObject
+ * Object that extends [[TraversableObject]] and implements `\ArrayAccess`
+ * Used for testing support for ArrayAccess object instead of arrays.
+ * @author Dmytro Naumenko <d.naumenko.a@gmail.com>
+ * @since 2.0.14.1
+ */
+class ArrayAccessObject extends TraversableObject implements \ArrayAccess
+{
+    /**
+     * Whether a offset exists
+     *
+     * @link http://php.net/manual/en/arrayaccess.offsetexists.php
+     * @param mixed $offset <p>
+     * An offset to check for.
+     * </p>
+     * @return boolean true on success or false on failure.
+     * </p>
+     * <p>
+     * The return value will be casted to boolean if non-boolean was returned.
+     * @since 2.0.14.1
+     */
+    public function offsetExists($offset)
+    {
+        return isset($this->data[$offset]);
+    }
+
+    /**
+     * Offset to retrieve
+     *
+     * @link http://php.net/manual/en/arrayaccess.offsetget.php
+     * @param mixed $offset <p>
+     * The offset to retrieve.
+     * </p>
+     * @return mixed Can return all value types.
+     * @since 2.0.14.1
+     */
+    public function offsetGet($offset)
+    {
+        return $this->data[$offset];
+    }
+
+    /**
+     * Offset to set
+     *
+     * @link http://php.net/manual/en/arrayaccess.offsetset.php
+     * @param mixed $offset <p>
+     * The offset to assign the value to.
+     * </p>
+     * @param mixed $value <p>
+     * The value to set.
+     * </p>
+     * @return void
+     * @since 2.0.14.1
+     */
+    public function offsetSet($offset, $value)
+    {
+        $this->data[$offset] = $value;
+    }
+
+    /**
+     * Offset to unset
+     *
+     * @link http://php.net/manual/en/arrayaccess.offsetunset.php
+     * @param mixed $offset <p>
+     * The offset to unset.
+     * </p>
+     * @return void
+     * @since 2.0.14.1
+     */
+    public function offsetUnset($offset)
+    {
+        unset($this->data[$offset]);
+    }
+}