i have created this php form for enquiry purpose but when i clicked on the submit button it's not working. can you tell me what have i done wrong in this code.
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<input type ="text" name="subject" placeholder="subject">
<input type ="email" name="email" placeholder="email">
<textarea rows="5" name="message" cols="30"></textarea>
<input class="btn" type="submit" name="submit" value="Submit">
</form>
<?php
if(isset($_POST['submit'])){
$to = "rizwandesigns19@gmail.com";
$subject = $_POST['subject'];
$message = $_POST['message'];
$from = $_POST['email'];
$headers = "From : $from";
mail($to, $subject, $message, $headers);
}
echo "Mail Sent";
?>
or can you give me valid php script for this purpose.