PHP new line break in emails

In PHP, you can use the built-in function "nl2br" to convert newline characters to HTML line breaks in emails. For example:

<?php

$email_body = "Hello,

This is a test email.

Regards,
John";

echo $email_body = nl2br($email_body);

This will convert the newline characters in the email body to HTML line breaks, so the email will display properly in the recipient's email client.

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Alternatively, you can use the "\r\n" or "\n" to insert new line breaks in email body.

<?php

echo $email_body = "Hello,\r\n\r\nThis is a test email.\r\n\r\nRegards,\r\nJohn";

Please note, while using nl2br() is good for plain text email, if you are sending HTML emails, you can use <br> or <p> tags to insert new lines.