<html><body>$str = "Hello";echo sha1($str);if (sha1($str) == "f7ff9e8b7bb2e09b70935a5d785e0cc5d9d0abf0") { echo "<br>Hello world!"; exit; } </body><!-- Mirrored from www.w3schools.com/php7/phptryit.asp?filename=tryphp_func_string_sha13 by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 05 Jun 2019 13:41:44 GMT --></html>