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<!DOCTYPE html> <html> <body> <?php // variable $user is the value of $_GET['user'] // and 'anonymous' if it does not exist echo $user = $_GET["user"] ?? "anonymous"; echo("<br>"); // variable $color is "red" if $color does not exist or is null echo $color = $color ?? "red"; ?> </body> <!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_oper_null_coalescing by HTTrack Website Copier/3.x [XR&CO'2014], Tue, 07 Jun 2022 19:58:24 GMT --> </html>
anonymous
red