array allow values

Question

if ( in_array( $plink, array( '404', 'sitemap' ) ) ) continue;

I need to invert condition i.e. allowed these values '404', 'sitemap' in loop. Don't exclude / only allow...

Answer 1

For inverting/negation condition use !.

if ( !in_array( $plink, array( '404', 'sitemap' ) ) ) continue;

It's the same principle like you probably know $a != $b.

Answer 2

use NOT operator to get negation of the condition. See the code below.

if ( !in_array( $plink, array( '404', 'sitemap' ) ) ) {
    echo "do what you want";
}