Simple fields issue with post field gettin value of 0

[ReGGaeBOSS]

Hi,

I’m doing some changes on a WP site using simple fields, which i’m not very confident with.

I have two field types, post and url. And if the post field is empty (no post selected) i want to output the value of the url field. The problem is if nothing is selected in the post field it still gets a value of 0.

Post field

Here is my code:

<?php
$slide_url = simple_fields_value('slideshow_slide_url');
$slide_extern_url = simple_fields_value('slideshow_slide_extern_url');
$slide_readmore = (is_numeric($slide_url)) ? '<a href="'.get_permalink($slide_url).'">Read more &raquo;</a>' : '<a href="'.$slide_extern_url.'" target="_blank">Read more &raquo;</a>';
?>

<?php echo $slide_readmore; ?>

I have not written this code,except the else part of the shorthand. Also I would want to not output any markup if none of these field has values. Is this possible? Would be very thankful for help.

[WebMachine]

Using the ternary operator gives you an either … or type of solution. So in either case you would get some markup. Why not use “if … else if … else” ?