Index: library/Zend/Filter/Inflector.php
===================================================================
--- library/Zend/Filter/Inflector.php	(revision 20756)
+++ library/Zend/Filter/Inflector.php	(working copy)
@@ -73,7 +73,7 @@
      */
     public function __construct($target = null, Array $rules = array(), $throwTargetExceptionsOn = null, $targetReplacementIdentifer = null)
     {
-        if ($target instanceof Zend_Config) {
+        if ($target instanceof Zend_Config || is_array($target)) {
             $this->setConfig($target);
         } else {
             if ((null !== $target) && is_string($target)) {
@@ -124,10 +124,15 @@
      * Use Zend_Config object to set object state
      *
      * @param  Zend_Config $config
+     * @throws Zend_Filter_Exception
      * @return Zend_Filter_Inflector
      */
-    public function setConfig(Zend_Config $config)
+    public function setConfig($config)
     {
+    	if (!$config instanceof Zend_Config && !is_array($config)) {
+    		throw new Zend_Filter_Exception('Invalid type given, value should be array or object Zend_Config');
+    	}
+    	
         foreach ($config as $key => $value) {
             switch ($key) {
                 case 'target':
@@ -137,8 +142,7 @@
                     if (is_scalar($value)) {
                         break;
                     }
-                    $paths = $value->toArray();
-                    foreach ($paths as $prefix => $path) {
+                    foreach ($value as $prefix => $path) {
                         $this->addFilterPrefixPath($prefix, $path);
                     }
                     break;
@@ -149,7 +153,10 @@
                     $this->setTargetReplacementIdentifier($value);
                     break;
                 case 'rules':
-                    $this->addRules($value->toArray());
+                	if ($value instanceof Zend_Config) {
+                		$value = $value->toArray();
+                	}
+                    $this->addRules($value);
                     break;
                 default:
                     break;
@@ -483,6 +490,7 @@
      * Resolve named filters and convert them to filter objects.
      *
      * @param  string $rule
+     * @throws Zend_Filter_Exception
      * @return Zend_Filter_Interface
      */
     protected function _getRule($rule)
Index: tests/Zend/Filter/InflectorTest.php
===================================================================
--- tests/Zend/Filter/InflectorTest.php	(revision 20756)
+++ tests/Zend/Filter/InflectorTest.php	(working copy)
@@ -428,6 +428,8 @@
         $inflector = new Zend_Filter_Inflector();
         $inflector->setConfig($config);
         $this->_testOptions($inflector);
+        $inflector->setConfig($this->getOptions());
+        $this->_testOptions($inflector);
     }
 
     /**