From dbdf1f8ae6fe00e4d47cc5387feeb1c3ca1b8856 Mon Sep 17 00:00:00 2001
From: Ben Harris <ben@tilde.team>
Date: Tue, 8 Mar 2022 12:49:49 -0500
Subject: [PATCH] use mb

---
 signup/signup-handler.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/signup/signup-handler.php b/signup/signup-handler.php
index e5a04c7..d831568 100644
--- a/signup/signup-handler.php
+++ b/signup/signup-handler.php
@@ -24,7 +24,7 @@ function add_ban_info($name, $email) {
 
 function starts_with($string, $prefix)
 {
-    return substr($string, 0, strlen($prefix)) === $prefix;
+    return mb_substr($string, 0, mb_strlen($prefix)) === $prefix;
 }
 
 function is_ssh_pubkey($string)