Insert space and carriage return in php script

How can I put a space between fname and lname, and a line break after email?
<?php
$saving = $_REQUEST['saving'];
if ($saving == 1){
$data = $_POST['fname'];
$data .= $_POST['lname'];
$data .= $_POST['email'];
$file = "savepic.txt";

$fp = fopen($file, "a") or die("Couldn't open $file for writing!");
fwrite($fp, $data) or die("Couldn't write values to file!");

fclose($fp);
echo "Request Successfully Send.";

}
?>

 

line break = . . "\r\n";
insert space between fname and lname=
$data = $_POST['fname'];
$data .= " ".$_POST['lname'];

of course there are other ways.

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