Setting a conditional in content.php

[Andrea6999]

I have to put a condition on this function:

<div class="imagen01">
<?php sacconicase_post_thumbnail();?>
<div class="mostrasconto"><?php echo ("&nbsp"),"-", get_the_author_meta('discount', $post->post_author ),"%" ;?></div></div>

I have to set the following: IF "get_the_author_meta" is empty, dont echo BUT dont show neither the whoole div.mostrasconto. I have to hide this div because there is a background via css

Which is the best solution?

[Phi11W]

Not sure about best, but this should do the trick: 

<?php
sacconicase_post_thumbnail();

$am = get_the_author_meta( 'discount', $post->post_author ); 
if ( $am )
   printf( '<div class="mostrasconto">&nbsp;-%s%%</div>', $am ); 
?>

Regards, 
   Phill W.