<html><body>$str1="Hello world!";$str2="What a nice day!";echo $str1 . " " . $str2; </body><!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_func_string_echo4 by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:51:05 GMT --></html>