How safe is PHP mail from spam?
Recently I have been using the email riddler at DD instead of CGI mail forms because I found the latter resulted in too much spam.
Today I read my first PHP tutorial and discovered PHP mail. What I am wondering if whether it is worth using it, or whether I am better of using the email riddler. What do you think?
The basic script that I am thinking about using will be something like below. Please let me know if there is any you think I need to add or subtract to protect against SPAM. (You will notice that I haven't included my real email address below - I am completely paranoid about SPAM!)
Code:
<html>
<body><?php
function spamcheck($field)
{
//eregi() performs a case insensitive regular expression match
if(eregi("to:",$field) || eregi("cc:",$field))
{
return TRUE;
}
else
{
return FALSE;
}
}//if "email" is filled out, send email
if (isset($_REQUEST['email']))
{
//check if the email address is invalid
$mailcheck = spamcheck($_REQUEST['email']);
if ($mailcheck==TRUE)
{
echo "Invalid input";
}
else
{
//send email
$name = $_REQUEST['name'] ;
$email = $_REQUEST['email'] ;
$subject = $_REQUEST['subject'] ;
$dates = $_REQUEST['dates'] ;
$message = $_REQUEST['message'] ;
mail("name@myemail.com", "$subject",
"$message\nDates we would like to book: $dates\n", "From: $name <$email>" );
echo "Thank you for using our mail form $name";
}
}
else
//if "email" is not filled out, display the form
{
echo "<form method='post' action='mailform2.php'>
Name: <input name='name' type='text' /><br />
Email: <input name='email' type='text' /><br />
Dates: <input name='dates' type='text' /><br />
Subject: <input name='subject' type='text' /><br />
Message:<br />
<textarea name='message' rows='15' cols='40'>
</textarea><br />
<input type='submit' />
</form>";
}
?></body>
</html>
Looking forward to reading your thoughts.
Rob
