Add preloaded ini config

Author: ToBee94

ext/mbstring/tests/mb_detect_order_with_ini_set.phpt

@@ -2,9 +2,13 @@
 Test mb_detect_order() function : ini set changes order
 --EXTENSIONS--
 mbstring
+--INI--
+mbstring.detect_order=UTF-8,ISO-8859-15,ISO-8859-1,ASCII
 --FILE--
 <?php
 
+var_dump( mb_detect_order());
+
 ini_set('mbstring.detect_order', 'UTF-8, ISO-8859-1, ASCII');
 
 var_dump( mb_detect_order());
@@ -15,6 +19,16 @@ var_dump( mb_detect_order());
 
 ?>
 --EXPECT--
+array(4) {
+  [0]=>
+  string(5) "UTF-8"
+  [1]=>
+  string(11) "ISO-8859-15"
+  [2]=>
+  string(10) "ISO-8859-1"
+  [3]=>
+  string(5) "ASCII"
+}
 array(3) {
   [0]=>
   string(5) "UTF-8"