How to implement mail() function in php?

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<!DOCTYPE html>
<head>
<title>Form submission</title>
</head>
<body>

<form action="form.php" method="POST">
First Name: <input type="text" name="first_name"><br>
Last Name: <input type="text" name="last_name"><br>
Subject: <input name="subject" type="text" /><br />
Email: <input type="text" name="email"><br>
Message:<br><textarea rows="5" name="message" cols="30"></textarea><br>
<input type="submit" name="submit" value="Submit">
</form>

</body>
</html>

PHP

<?php
  $admin_email = "someone@gmail.com";
  $first_name = $_POST['first_name'];
  $last_name = $_POST['last_name'];
  $subject = $_POST['subject'];
  $email = $_POST['email'];
  $message = $_POST['message'];

  //send email
 mail($email, "$subject", $message, "From:" . $admin_email);
?>

For me the code looks correct.But the email is not received by the recipient.
Problem with my code or anything else?
Please suggest me ideas or any links to implement this in my localhost.

Posted 20-Oct-14 2:16am

Janardhanam Julapalli

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Leo Chapiro · Answer 1 · 2014-10-20T03:12:00

Take a look at this[^] example:

PHP

<?php
$to = "somebody@example.com";
$subject = "My subject";
$txt = "Hello world!";
$headers = "From: webmaster@example.com" . "\r\n" .
"CC: somebodyelse@example.com";

mail($to,$subject,$txt,$headers);
?>

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

Parameters:

to
Required. Specifies the receiver / receivers of the email

subject
Required. Specifies the subject of the email. Note: This parameter cannot contain any newline characters

message
Required. Defines the message to be sent. Each line should be separated with a LF (\n). Lines should not exceed 70 characters.