Below is the test code I was playing with. I used variables rather than ACF fields, but you can swap them back out.
Also… I used || for OR, && for AND, and ! for “not equal to”
Also… in the last conditional where you check for “One single link”… that won’t trigger when it’s just link 3, because the condition is already met when you output “Link 1 and Link 2 OR Link 3”.
If you would like to tell me your purpose for the code, I may be able to offer a better solution.
<?php
$link1 = '1';
$link2 = '';
$link3 = '';
if ( $link1 && $link2 && $link3 ) {
echo '<div class="red">';
echo '<p>All 3 Links</p>';
echo '</div>';
} else if ( ( $link1 && $link2 ) || ( $link3 && !$link1 && !$link2 ) ) {
echo '<div class="blue">';
echo '<p>Link 1 and Link 2 OR Link 3</p>';
echo '</div>';
} else if ( $link2 && $link3 && !$link1 ) {
echo '<div class="green">';
echo '<p>Link 2 and Link 3 But not Link 1</p>';
echo '</div>';
} else if ( ( $link3 && !$link1 && !$link2 ) || ( !$link3 && !$link1 && $link2 ) || ( !$link3 && $link1 && !$link2 ) ) {
echo '<div class="hotpink">';
echo '<p>One single Link</p>';
echo '</div>';
}
?>
