Need help with IMPLODE

programming
1

I have this function:

function display_btm_links() {
 // find active
 $active = $_SERVER['REQUEST_URI'];
 // create array variables
 $blinks['/'] = 'home';
 $blinks['/how.php'] = 'how it works';
 $blinks['/about.php'] = 'about us';
 $blinks['/services.php'] = 'services';
 $blinks['/benefits.php'] = 'benefits';
 $blinks['/contact.php'] = 'contact';
 $blinks['/legal.php'] = 'user agreement';
 $blinks['/privacy.php'] = 'privacy policy';
 // links function output
 foreach ( $blinks as $blink => $btextLink ) {
  echo ( $_SERVER['REQUEST_URI'] == $blink ) ? '<u>' . $btextLink . '</u> &nbsp; &nbsp; | &nbsp; &nbsp;' : '<a href="' . $blink . '">' . $btextLink . '</a> &nbsp; &nbsp; | &nbsp; &nbsp;';
 }
}

I think the problem is obvious…I want my implode “glue” to be

 &nbsp; &nbsp; | &nbsp; &nbsp;

But I am having insane trouble writing this so it works. Keep getting “bad arguments.”

If anyone can help I would appreciate it!