Send mail in PHP

PHP provides a convenient way to send email with the mail() function.

Syntax of mail function:

mail(to,subject,message,headers,parameters)

• to --  Required. Specifies the recipient's email address or addresses.
• subject -- Required. Specifies the email's subject line. 
• message -- Required. Specifies the actual email body . Each line should be separated with  \n.
• headers -- Optional. Specifies additional headers such as "From", "Cc", "Bcc", etc. The additional headers should be separated with  (\r\n).
• parameters -- Specifies any additional parameters.It is optional.

Example of PHP Mail function

<h3>Contact Form</h3>
<?php
// display form if user has not clicked submit
if (!isset($_POST["submit"])) {
  ?>
  <form method="post" action="<?php echo $_SERVER["PHP_SELF"];?>">
  From: <input type="text" name="from"><br>
  Subject: <input type="text" name="subject"><br>
  Message: <textarea rows="10" cols="40" name="message"></textarea><br>
  <input type="submit" name="submit" value="Submit">
  </form>
  <?php 
} else {    // the user has submitted the form
  // Check if the "from" input field is filled out
  if (isset($_POST["from"])) {
    $from = $_POST["from"]; // sender
    $subject = $_POST["subject"];
    $message = $_POST["message"];
    // send mail
    mail("kapil@example.com",$subject,$message,"From: $from\n");
    echo "Thank you for contacting us.";
  }
}
?>