Best way to print a new line to a txt file ?

I have this, and want to add a new line after each entry, ...?

PHP Code:

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<?php
         
$val = $_GET['data']; 

$myFile = "testFile.txt";
$fh = fopen($myFile, 'a') or die("can't open file");

$stringData = $val;
fwrite($fh, $stringData);
          

fclose($fh); 
?>

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What does an entry look like? Ie: how would you know where to add a new line?

whoops sry, i meant after the,

PHP Code:

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fwrite($fh, $stringData); 


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I tried a few variations such as,

PHP Code:

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fwrite($fh, $stringData); 
fwrite($fh, "\n"); 


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and

PHP Code:

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fwrite($fh, $stringData + "\n"); 


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and

PHP Code:

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fwrite($fh, "$stringData\n"); 


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no joy though..

In HTML a line break is "<br />".

Still can't get this simple thing working, i am taking in a query string and printing it to a text file,

PHP Code:

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<?php
   
$myFile = "testFile.txt";
$fh = fopen($myFile, 'a') or die("can't open file");
$ref = $_GET['data']; 
      
$newline = "<br />";

 fwrite($fh,$ref.$newline);
 fclose($fh); 

?>

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So the text file should look like

string1
string2
string3

but the above doesn't give that....

If your file is on a windows computer, you need to use "\r\n" for newlines, if it is on a mac then you should use just "\r".

Let me try this another way.

I want to append the incoming data to a text file, at the moment, the data is following on after each other on the same line with a newline character inbetween.

so if i send
.php?name= bill then
.php?name= john then
.php?name= fred

then i want that saved to a text file like

bill
john
fred

at the moment its saving as

bill john fred the spaces being newline characters.

Are you using Window or Linux, did you try \r\n.

Forget <br />, I thought you were trying to display newlines in an HTML document.