diff --git a/lib/Zend/Locale/Format.php b/lib/Zend/Locale/Format.php
index bd1803b2..e745bcb3 100644
--- a/lib/Zend/Locale/Format.php
+++ b/lib/Zend/Locale/Format.php
@@ -308,7 +308,7 @@ class Zend_Locale_Format
         // Get correct signs for this locale
         $symbols = Zend_Locale_Data::getList($options['locale'], 'symbols');
         $oenc = iconv_get_encoding('internal_encoding');
-        iconv_set_encoding('internal_encoding', 'UTF-8');
+        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', 'UTF-8') : ini_set('default_charset', 'UTF-8');
 
         // Get format
         $format = $options['number_format'];
@@ -343,7 +343,7 @@ class Zend_Locale_Format
         }
 
         if (iconv_strpos($format, '0') === false) {
-            iconv_set_encoding('internal_encoding', $oenc);
+            (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', $oenc) : ini_set('default_charset', 'UTF-8');
             #require_once 'Zend/Locale/Exception.php';
             throw new Zend_Locale_Exception('Wrong format... missing 0');
         }
@@ -469,7 +469,7 @@ class Zend_Locale_Format
             }
         }
 
-        iconv_set_encoding('internal_encoding', $oenc);
+        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', $oenc) : ini_set('default_charset', 'UTF-8');
         return (string) $format;
     }
 
@@ -779,7 +779,7 @@ class Zend_Locale_Format
         $result['locale'] = $options['locale']; // save the locale used to normalize $number (convenience)
 
         $oenc = iconv_get_encoding('internal_encoding');
-        iconv_set_encoding('internal_encoding', 'UTF-8');
+        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', 'UTF-8') : ini_set('default_charset', 'UTF-8');
         $day   = iconv_strpos($format, 'd');
         $month = iconv_strpos($format, 'M');
         $year  = iconv_strpos($format, 'y');
@@ -844,7 +844,7 @@ class Zend_Locale_Format
         }
 
         if (empty($parse)) {
-            iconv_set_encoding('internal_encoding', $oenc);
+            (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', $oenc) : ini_set('default_charset', 'UTF-8');
             #require_once 'Zend/Locale/Exception.php';
             throw new Zend_Locale_Exception("Unknown date format, neither date nor time in '" . $format . "' found");
         }
@@ -864,7 +864,7 @@ class Zend_Locale_Format
         preg_match_all('/\d+/u', $number, $splitted);
 
         if (count($splitted[0]) == 0) {
-            iconv_set_encoding('internal_encoding', $oenc);
+            (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', $oenc) : ini_set('default_charset', 'UTF-8');
             #require_once 'Zend/Locale/Exception.php';
             throw new Zend_Locale_Exception("No date part in '$date' found.");
         }
@@ -970,7 +970,7 @@ class Zend_Locale_Format
                 if (($position !== false) and ((iconv_strpos($date, $result['day']) === false) or
                                                (isset($result['year']) and (iconv_strpos($date, $result['year']) === false)))) {
                     if ($options['fix_date'] !== true) {
-                        iconv_set_encoding('internal_encoding', $oenc);
+                        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', $oenc) : ini_set('default_charset', 'UTF-8');
                         #require_once 'Zend/Locale/Exception.php';
                         throw new Zend_Locale_Exception("Unable to parse date '$date' using '" . $format
                             . "' (false month, $position, $month)");
@@ -986,7 +986,7 @@ class Zend_Locale_Format
             if (isset($result['day']) and isset($result['year'])) {
                 if ($result['day'] > 31) {
                     if ($options['fix_date'] !== true) {
-                        iconv_set_encoding('internal_encoding', $oenc);
+                        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', $oenc) : ini_set('default_charset', 'UTF-8');
                         #require_once 'Zend/Locale/Exception.php';
                         throw new Zend_Locale_Exception("Unable to parse date '$date' using '"
                                                       . $format . "' (d <> y)");
@@ -1002,7 +1002,7 @@ class Zend_Locale_Format
             if (isset($result['month']) and isset($result['year'])) {
                 if ($result['month'] > 31) {
                     if ($options['fix_date'] !== true) {
-                        iconv_set_encoding('internal_encoding', $oenc);
+                        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', $oenc) : ini_set('default_charset', 'UTF-8');
                         #require_once 'Zend/Locale/Exception.php';
                         throw new Zend_Locale_Exception("Unable to parse date '$date' using '"
                                                       . $format . "' (M <> y)");
@@ -1018,7 +1018,7 @@ class Zend_Locale_Format
             if (isset($result['month']) and isset($result['day'])) {
                 if ($result['month'] > 12) {
                     if ($options['fix_date'] !== true || $result['month'] > 31) {
-                        iconv_set_encoding('internal_encoding', $oenc);
+                        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', $oenc) : ini_set('default_charset', 'UTF-8');
                         #require_once 'Zend/Locale/Exception.php';
                         throw new Zend_Locale_Exception("Unable to parse date '$date' using '"
                                                       . $format . "' (M <> d)");
@@ -1045,7 +1045,7 @@ class Zend_Locale_Format
             }
         }
 
-        iconv_set_encoding('internal_encoding', $oenc);
+        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', $oenc) : ini_set('default_charset', 'UTF-8');
         return $result;
     }
 
diff --git a/lib/Zend/Service/Audioscrobbler.php b/lib/Zend/Service/Audioscrobbler.php
index 2d269ed3..822335a1 100644
--- a/lib/Zend/Service/Audioscrobbler.php
+++ b/lib/Zend/Service/Audioscrobbler.php
@@ -69,9 +69,9 @@ class Zend_Service_Audioscrobbler
     {
         $this->set('version', '1.0');
 
-        iconv_set_encoding('output_encoding', 'UTF-8');
-        iconv_set_encoding('input_encoding', 'UTF-8');
-        iconv_set_encoding('internal_encoding', 'UTF-8');
+        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('output_encoding', 'UTF-8') : ini_set('default_charset', 'UTF-8');
+        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('input_encoding', 'UTF-8') : ini_set('default_charset', 'UTF-8');
+        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', 'UTF-8') : ini_set('default_charset', 'UTF-8');
     }
 
     /**
diff --git a/lib/Zend/Service/Technorati.php b/lib/Zend/Service/Technorati.php
index 8ed5e981..b8f9e64e 100644
--- a/lib/Zend/Service/Technorati.php
+++ b/lib/Zend/Service/Technorati.php
@@ -84,9 +84,9 @@ class Zend_Service_Technorati
      */
     public function __construct($apiKey)
     {
-        iconv_set_encoding('output_encoding', 'UTF-8');
-        iconv_set_encoding('input_encoding', 'UTF-8');
-        iconv_set_encoding('internal_encoding', 'UTF-8');
+        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('output_encoding', 'UTF-8') : ini_set('default_charset', 'UTF-8');
+        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('input_encoding', 'UTF-8') : ini_set('default_charset', 'UTF-8');
+        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', 'UTF-8') : ini_set('default_charset', 'UTF-8');
 
         $this->_apiKey = $apiKey;
     }
diff --git a/lib/Zend/Validate/Hostname.php b/lib/Zend/Validate/Hostname.php
index 8227169f..352408f9 100644
--- a/lib/Zend/Validate/Hostname.php
+++ b/lib/Zend/Validate/Hostname.php
@@ -518,7 +518,7 @@ class Zend_Validate_Hostname extends Zend_Validate_Abstract
             $status = false;
 
             $origenc = iconv_get_encoding('internal_encoding');
-            iconv_set_encoding('internal_encoding', 'UTF-8');
+            (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', 'UTF-8') : ini_set('default_charset', 'UTF-8');
             do {
                 // First check TLD
                 $matches = array();
@@ -614,7 +614,7 @@ class Zend_Validate_Hostname extends Zend_Validate_Abstract
                 }
             } while (false);
 
-            iconv_set_encoding('internal_encoding', $origenc);
+            (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', $origenc) : ini_set('default_charset', 'UTF-8');
             // If the input passes as an Internet domain name, and domain names are allowed, then the hostname
             // passes validation
             if ($status && ($this->_options['allow'] & self::ALLOW_DNS)) {
diff --git a/lib/Zend/Validate/StringLength.php b/lib/Zend/Validate/StringLength.php
index 424974b3..ae3d3611 100644
--- a/lib/Zend/Validate/StringLength.php
+++ b/lib/Zend/Validate/StringLength.php
@@ -200,13 +200,13 @@ class Zend_Validate_StringLength extends Zend_Validate_Abstract
     {
         if ($encoding !== null) {
             $orig   = iconv_get_encoding('internal_encoding');
-            $result = iconv_set_encoding('internal_encoding', $encoding);
+            $result = (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', $encoding) : ini_set('default_charset', 'UTF-8');
             if (!$result) {
                 #require_once 'Zend/Validate/Exception.php';
                 throw new Zend_Validate_Exception('Given encoding not supported on this OS!');
             }
 
-            iconv_set_encoding('internal_encoding', $orig);
+            (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', $orig) : ini_set('default_charset', 'UTF-8');
         }
 
         $this->_encoding = $encoding;
diff --git a/lib/Zend/XmlRpc/Client.php b/lib/Zend/XmlRpc/Client.php
index 5d20ce41..898df7a1 100644
--- a/lib/Zend/XmlRpc/Client.php
+++ b/lib/Zend/XmlRpc/Client.php
@@ -257,9 +257,9 @@ class Zend_XmlRpc_Client
     {
         $this->_lastRequest = $request;
 
-        iconv_set_encoding('input_encoding', 'UTF-8');
-        iconv_set_encoding('output_encoding', 'UTF-8');
-        iconv_set_encoding('internal_encoding', 'UTF-8');
+        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('input_encoding', 'UTF-8') : ini_set('default_charset', 'UTF-8');
+        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('output_encoding', 'UTF-8') : ini_set('default_charset', 'UTF-8');
+        (PHP_VERSION_ID < 50600) ? iconv_set_encoding('internal_encoding', 'UTF-8') : ini_set('default_charset', 'UTF-8');
 
         $http = $this->getHttpClient();
         if($http->getUri() === null) {