How do I negate this if/else comparison to just if?

if-statement, logical-operators, php

Solution

Negate the expression; use the "NOT" logical operator:

if (!(isset($_POST['prerequisite']) && $form == "CheckingIn")) { echo "hidden"; }

(notice the ! symbol)

Read more here: http://php.net/manual/en/language.operators.logical.php

Problem

I'm trying to set the class hidden, unless two factors are met. Currently, I'm using the code below: ``` <?php if (isset($_POST['prerequisite']) && $form == "CheckingIn") { } else { echo "hidden"; } ?> ``` How can I fix this to just be an if statement instead of an if/else?

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