how to send Email with Attachment to Registered Email Address

Email Adress:
Message:
 

 Default.html

<form action="send_mail.php" method="post">
     <table>
     <tr>
    <td>Email Adress:</td>



    <td>
    <input type="text" name="email_address" value="" maxlength="100" />
    </td>
    </tr>
    <tr>
    <td>Message:</td>
    <td>
    <textarea rows="10" cols="50" name="message"></textarea>
    </td>
    </tr>
    <tr><td>&nbsp;</td>
    <td>
    <input type="submit" value="Send" />
    </td>
    </tr>
    </table>
    </form>


send_mail.php

<?php
 $webmaster_email = "winodbhadaliya@gmail.com";
 $email_address = $_REQUEST['email_address'] ;
 $comments = $_REQUEST['message'] ;

 function isInjected($str) {
    $injections = array('(\n+)',
    '(\r+)',
    '(\t+)',
    '(%0A+)',
    '(%0D+)',
    '(%08+)',
    '(%09+)'
    );
    $inject = join('|', $injections);
    $inject = "/$inject/i";
    if(preg_match($inject,$str)) {
        return true;
    }
    else {
        return false;
    }
   }

?>