php - looping though and remixing $var -


ok, having small issue, need loop though $usd,$aud etc , possible currency exchange rates e.g $usd:$aud - $aud:$usd, $usd:$nzd - $nzd:$usd

here code using 

<?php  $usd = 'usd'; # usa dollar $nzd = 'nzd'; #new zealand dollar  $kwd = 'jpd'; #japanese dollar  $gbp = 'gbp'; #uk pound $aud = 'aud';  $url = 'http://finance.yahoo.com/d/quotes.csv?f=l1d1t1&s='.$gbp.$aud.'=x'; $handle = fopen($url, 'r');  if ($handle) {     $result = fgetcsv($handle);     fclose($handle);  }  echo '1 '.$aud.' worth '.$result[0].' '.$usd.' based on data on '.$result[1].' '.$result[2];  ?>

what need away make sure looks @ different ways rates go together.

my first thought while or loop not sure, help

$currencies = array($used, $nzd, $kwd, $gbp, $aud); foreach ($currencies $from)  foreach ($currencies $to)      if ($from != $to)         // query api conversion $from $to

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