Basic usage
<div class="text" <?php aos( 'fade-up' ); ?>>
...
</div>
Additional settings
<div class="text" <?php aos( [
'name' => 'fade-up',
'anchor-placement' => 'center-center'
] ); ?>>
...
</div>
Conditional settings
<?php
$aos_settings = [
'name' => 'fade-up',
'anchor-placement' => !empty( $placement ) ? $placement : null // `null` values removed.
];
?>
<div class="text" <?php aos( $aos_settings ); ?>>
...
</div>