Do not use mb_strlen result for string indexes

The string indexes are in bytes, while mb_strlen counts chars.

Issue #12397

Signed-off-by: Michal Čihař <michal@cihar.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/examples/openid.php b/examples/openid.php
index 8ef34e9ee3..9fe7b90491 100644
--- a/examples/openid.php
+++ b/examples/openid.php
@@ -89,7 +89,7 @@ $base .= '://' . $_SERVER['SERVER_NAME'] . ':' . $_SERVER['SERVER_PORT'];
 
 $realm = $base . '/';
 $returnTo = $base . dirname($_SERVER['PHP_SELF']);
-if ($returnTo[mb_strlen($returnTo) - 1] != '/') {
+if ($returnTo[strlen($returnTo) - 1] != '/') {
     $returnTo .= '/';
 }
 $returnTo .= 'openid.php';