https://github.com/PHPOffice/Common/issues/11.

Roman Syroeshko · Roman Syroeshko · commit 57f8bc4001c6 · 2016-07-05T20:51:27.000+04:00
diff --git a/src/Common/Text.php b/src/Common/Text.php
@@ -162,7 +162,7 @@ public static function toUnicode($text)
      * @since 0.11.0
      * @link http://www.randomchaos.com/documents/?source=php_and_unicode
      */
-    private static function utf8ToUnicode($text)
+    public static function utf8ToUnicode($text)
     {
         $unicode = array();
         $values = array();

Original file line number	Diff line number	Diff line change
`@@ -162,7 +162,7 @@ public static function toUnicode($text)`
`162`	`162`	`* @since 0.11.0`
`163`	`163`	`* @link http://www.randomchaos.com/documents/?source=php_and_unicode`
`164`	`164`	`*/`
`165`		`- private static function utf8ToUnicode($text)`
	`165`	`+ public static function utf8ToUnicode($text)`
`166`	`166`	`{`
`167`	`167`	`$unicode = array();`
`168`	`168`	`$values = array();`