Parse error: syntax error, unexpected T_FUNCTION line 10?

Question

What is wrong with my code? I ran the code on my test server and the code worked but when I upload it to my production server I get

Parse error: syntax error, unexpected T_FUNCTION in /hermes/bosweb/web013/b130/ipg.acrsflcom/darayngedbeats/gentest.php on line 10

here is my code

$old = "http://darayngedbeats1.s3.amazonaws.com    /mp3/CrazyMonsta2.mp3?AWSAccessKeyId=AKIAJXA36ESCLQHCB54Q&Expires=1297279906& Signature=HD36ZQE8yeTIW6JPWKMcciPTiTs%3D"; //enter the key that needs to be converted
$search =  array(":","?","=","&","%");
$replace = array("%3A","%3F","%3D","%26","%25");

function search_replace($s,$r,$sql)
{ $e = '/('.implode('|',array_map('preg_quote', $s)).')/';
  $r = array_combine($s,$r);
  return preg_replace_callback($e, function($v) use ($s,$r) { return $r[$v[1]];  },$sql);
}

echo "<br><br>";
$new = search_replace($search,$replace,$old);
echo $new;

?>