Conditonally check if Custom Meta Box has input

Question

I currently display a URL from a custom meta box, but wanted to add a conditional check, so that if nothing has been entered, not to display the link text.

<a target="_blank" href="<?php $urlbox = get_url_desc_box(); echo $urlbox[0]; ?>">Visit Website &raquo;</a>

At the moment, even when nothing is added to the URL Meta BOX, the Visit Website text still appears within the post.

Answer 1

$urlbox = get_url_desc_box();

if ( !empty( $urlbox[0] ) ) {
    echo sprintf( '<a target="_blank" href="%s">Visit Website &raquo;</a>', $urlbox[0] );
}

Answer 2

You should just need to move your logic outside of the <a> tag, and create a condition to only display if the result isn't null

<?php 
$urlbox = get_url_desc_box();
if ($urlbox[0] != null) { ?>
      <a target="_blank" href="<?php echo $urlbox[0]; ?>">Visit Website &raquo;</a>
<?php } ?>