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Display Number up to two decimal point error

$ch = curl_init();

  curl_setopt($ch, CURLOPT_URL, `http://orbisadvisors.redinews.com/tools/XM01?                                                                                                      queryid=QJ33020&fields=Last&fields=Change&fields=Chperc&symbol=BSZ`);

  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

  $sp= curl_exec ($ch);

  $sp1=explode(" ",$sp);

  echo "????".$lsp1=$sp1[4];

  printf("%.2f",$lsp1);

  print_r($sp1);

  curl_close ($ch);

       

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, 'http://orbisadvisors.redinews.com/tools/XM01?queryid=QJ33020&fields=Last&fields=Change&fields=Chperc&symbol=BSZ');

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

$sp= curl_exec ($ch);

curl_close ($ch);    

 

$xml = simplexml_load_string($sp);

$last = sprintf("+%.2f", $xml->Stock->Last); // 1280.70