Add line-break in text/plain email

I’m using the function of WordPress wp_mail() to send an email about the form data that is submitted on my website.

In the $data, I have tried to use \n for line break but it printed \n on the email like below:

First value \n Second value \n Third Value

My code is:

$data = "First: $first_value" . '\n' . "Second: $second_value" . '\n' . "Third: $third_value"

The desired result in the email received is:

First: value

Second: value

Third: value

>Solution :

To ensure that the break lines ("\n") are implemented appropriately, as M.Eriksson suggested, you must avoid single quatations when defining them. To be more clear, see the output of the code below:

$first_value = "one";
$second_value = "second";
$third_value = "third";
$data = "First: $first_value" . '\n' . "Second: $second_value" . '\n' . "Third: $third_value";
echo($data);

First: one\nSecond: second\nThird: third

But when you use double quotation (") instead of single quotation (‘) the result would be:

<?php
$first_value = "one";
$second_value = "second";
$third_value = "third";
$data = "First: $first_value" . "\n" . "Second: $second_value" . "\n" . "Third: $third_value";
echo($data);
?>

First: one
Second: second
Third: third

A more generic approach would be using PHP_EOL:

<?php
$first_value = "one";
$second_value = "second";
$third_value = "third";
$data = "First: $first_value" . PHP_EOL . "Second: $second_value" . PHP_EOL . "Third: $third_value";
echo($data);
?>

First: one
Second: second
Third: third