如何在PHP中将日期格式化为意大利语?

I have got a webpage that get some values from a mysql database, there's also a date value, I need to change it from y-m-d 2015-03-12 to d-m-y 12-03-2015 or better in for example Monday 12 March in italian if it's possibile how can I do?

This is what I tried:

      $data= mysql_result($result,$i,"data");
      $retrieved = '$data';
      $date = DateTime::createFromFormat('Ymd', $retrieved);
      echo $date->format('d/m/Y');
      $data = $date;

The format in createFromFormat must be Y-m-d and the format in $date->format() must be d-m-Y you must change your formats like this:

<?php

  $date = DateTime::createFromFormat('Y-m-d', '2015-03-12');
  $date_out = $date->format('d-m-Y');
  echo $date_out; //output 12-03-2015

  echo "<br>
";

  $date_out = $date->format('l d F');
  echo $date_out; //output Thursday 12 March


?>

You can read more at:

http://php.net/manual/es/datetime.createfromformat.php