Consistant implode usage

library/Zend/Locale/Format.php

@@ -807,7 +807,7 @@ public static function convertPhpToIsoFormat($format)
             }
         }
 
-        return implode($converted);
+        return implode('', $converted);
     }
 
     /**

library/Zend/Pdf/Element/String.php

@@ -257,7 +257,7 @@ public static function unescape($str)
             }
         }
 
-        return implode($outEntries);
+        return implode('', $outEntries);
     }
 
 }

library/Zend/Pdf/Element/String/Binary.php

@@ -81,7 +81,7 @@ public static function unescape($inStr)
             $chunks[] = '0';
         }
 
-        return pack('H*' , implode($chunks));
+        return pack('H*' , implode('', $chunks));
     }
 
 

library/Zend/Search/Lucene/Document/Html.php

@@ -478,6 +478,6 @@ public function getHtmlBody()
             $outputFragments[] = $this->_doc->saveXML($bodyNodes->item($count));
         }
 
-        return implode($outputFragments);
+        return implode('', $outputFragments);
     }
 }

library/Zend/Validate/Abstract.php

@@ -233,7 +233,7 @@ protected function _createMessage($messageKey, $value)
         } elseif (is_array($value)) {
             $value = $this->_implodeRecursive($value);
         } else {
-            $value = implode((array) $value);
+            $value = implode('', (array) $value);
         }
 
         if ($this->getObscureValue()) {

library/Zend/Validate/Hostname.php

@@ -2421,6 +2421,6 @@ protected function decodePunycode($encoded)
             }
         }
 
-        return implode($decoded);
+        return implode('', $decoded);
     }
 }