电子邮件中的换行符不会中断行，但会显示在消息文本中

Question

I'm trying to send an email with PHP.

This is my code:

$subject = 'You got mail';
$message = 'This is one line.
' .
           'This is another.';
mail('[e-mail]', $subject, $message);

When I receive the mail, the two lines of the message body appear as one line, with the newline given as part of the message text:

This is one line. This is another.

Why is that, and how can I get my lines to break?

---

Solution:

ôkio's answer is correct. But instead of using double quotes, I now use the predefined end-of-line variable:

$message = 'This is one line.' . PHP_EOL .
           'This is another.';

Answer 1

Try using double quotes :

$subject = "You got mail";
$message = "This is one line.
" .
           "This is another.";
mail('[e-mail]', $subject, $message);

Single quote do not interpret the content of the string and display it as it is. To do so, you must use double quotes.

A more complete answer : What is the difference between single-quoted and double-quoted strings in PHP?