php mail function sometimes send blank emails -

i know how use php mail() function. works me. receiving blank emails no message body, subject mentioned in php mailer function blank email id. did javascript validation each , every form no field blank while submitting form.

after validation receiving blank email. can 1 please tell me why happening?

note: tried submit form blank spaces in text boxes blank spaces form not submitting because of javascript validation.

edit:

code used:

<?php   $to      = 'nobody@example.com';   $subject = 'the subject';   $message = 'hello';   $headers = 'from: webmaster@example.com' . "\r\n" .              'reply-to: webmaster@example.com' . "\r\n" .              'x-mailer: php/' . phpversion();    mail($to, $subject, $message, $headers);  ?> 

this example http://php.net/manual/en/function.mail.php

without code not possible check issue. below advice can use :

1) never use javascript validation, bypassed, client side not server side. use server side validation.

2) php mail function use, not feature rich. try using swift or phpmailer.

hope help.