Merge pull request #216 from mhujer/filter-preg-replace

Fixed Zend_Filter_Word_SeparatorToCamelCase preg_replace to work with PHP 5.5

library/Zend/Filter/Word/SeparatorToCamelCase.php

@@ -39,14 +39,26 @@ class Zend_Filter_Word_SeparatorToCamelCase extends Zend_Filter_Word_Separator_A
         $pregQuotedSeparator = preg_quote($this->_separator, '#');
 
         if (self::isUnicodeSupportEnabled()) {
-            parent::setMatchPattern(array('#('.$pregQuotedSeparator.')(\p{L}{1})#e','#(^\p{Ll}{1})#e'));
-            parent::setReplacement(array("strtoupper('\\2')","strtoupper('\\1')"));
+            parent::setMatchPattern(array('#('.$pregQuotedSeparator.')(\p{L}{1})#','#(^\p{Ll}{1})#'));
+            parent::setReplacement(array('Zend_Filter_Word_SeparatorToCamelCase', '_strtoupperArray'));
         } else {
-            parent::setMatchPattern(array('#('.$pregQuotedSeparator.')([A-Za-z]{1})#e','#(^[A-Za-z]{1})#e'));
-            parent::setReplacement(array("strtoupper('\\2')","strtoupper('\\1')"));
+            parent::setMatchPattern(array('#('.$pregQuotedSeparator.')([A-Za-z]{1})#','#(^[A-Za-z]{1})#'));
+            parent::setReplacement(array('Zend_Filter_Word_SeparatorToCamelCase', '_strtoupperArray'));
         }
 
-        return parent::filter($value);
+        return preg_replace_callback($this->_matchPattern, $this->_replacement, $value);
+    }
+
+    /**
+     * @param array $matches
+     * @return string
+     */
+    private static function _strtoupperArray(array $matches)
+    {
+        if (array_key_exists(2, $matches)) {
+            return strtoupper($matches[2]);
+        }
+        return strtoupper($matches[1]);
     }
 
 }