mail( ) function in PHP

Email can be send using PHP by using mail( ) function.
Syntax of mail function is

mail (to,subject,message,headers)

Parameter	usage
to	reciever email
subject	Subject of Email
message	Content to be sent in message
headers	Optional. It is used for additional headers, like From, Cc, and Bcc.

 Now let write the code for sending email.
<?php

 $subject = "Email";
 $message = "This is Test email ";
 $to = "test@gmail.com";
 $from = "aa@gmail.com";
 $headers = "From:" . $from;
 mail($to,$subject,$message,$headers);

?>