added test for bug #68665

Zend/tests/multibyte/bug68665.phpt

@@ -0,0 +1,23 @@
+--TEST--
+Crash with Big5
+--SKIPIF--
+<?php
+if (!in_array("zend.detect_unicode", array_keys(ini_get_all()))) {
+  die("skip Requires configure --enable-zend-multibyte option");
+}
+if (!extension_loaded("mbstring")) {
+  die("skip Requires mbstring extension");
+}
+?>
+--INI--
+zend.multibyte=1
+mbstring.internal_encoding=big5
+--FILE--
+<?php
+echo '\'hello';
+?>
+
+===DONE===
+--EXPECT--
+'hello
+===DONE===