Form that allows multiple emails and sends to all
===

I have a form that will email the info to the email entered in the email field, but I want the user to be able to type in multipple emails and for the info to go to all of them.   Can anyone help edit my code to allow this....


    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    
    <head>
           <meta http-equiv="content-type" content="text/html; charset=windows-1250">
           <title>Contact Form</title>
           <meta name="author" content="" />
           <meta name="copyright" content="" />
           <meta name="website" content="http://web-kreation.com" />
           
           <!-- the cascading style sheet-->
           <link href="stylecontact.css" rel="stylesheet" type="text/css" />
           
    </head>
      
    
    <body>
         <div id="contentForm">
    
                <!-- The contact form starts from here-->
                <?php
                     $error    = ''; // error message
                     $name     = ''; // sender's name
                     $email    = ''; // sender's email address
                     $subject  = ''; // subject
                     $message  = ''; // the message itself
                   	 $spamcheck = ''; // Spam check
    
                if(isset($_POST['send']))
                {
                     $name     = $_POST['name'];
                     $email    = $_POST['email'];
                     $subject  = $_POST['subject'];
                     $message  = $_POST['message'];
                   	 $spamcheck = $_POST['spamcheck'];
    
                    if(trim($name) == '')
                    {
                        $error = '<div class="errormsg">Please enter your name!</div>';
                    }
                	    else if(trim($email) == '')
                    {
                        $error = '<div class="errormsg">Please enter your email address!</div>';
                    }
                    else if(!isEmail($email))
                    {
                        $error = '<div class="errormsg">You have enter an invalid e-mail address. Please, try again!</div>';
                    }
                	    if(trim($subject) == '')
                    {
                        $error = '<div class="errormsg">Please enter a subject!</div>';
                    }
                	else if(trim($message) == '')
                    {
                        $error = '<div class="errormsg">Please enter your message!</div>';
                    }
    	          	else if(trim($spamcheck) == '')
    	            {
    	            	$error = '<div class="errormsg">Please enter the number for Spam Check!</div>';
    	            }
    	          	else if(trim($spamcheck) != '5')
    	            {
    	            	$error = '<div class="errormsg">Spam Check: The number you entered is not correct! 2 + 3 = ???</div>';
    	            }
                    if($error == '')
                    {
                        if(get_magic_quotes_gpc())
                        {
                            $message = stripslashes($message);
                        }
    
                        // the email will be sent here
                        // make sure to change this to be your e-mail
                        $to      = "jeengle@indiana.edu";
    
                        // the email subject
                        // '[Contact Form] :' will appear automatically in the subject.
                        // You can change it as you want
    
                        $subject = '[Contact Form] : ' . $subject;
    
                        // the mail message ( add any additional information if you want )
                        $msg     = "From : $name \r\ne-Mail : $email \r\nSubject : $subject \r\n\n" . "Message : \r\n$message";
    
                        mail($to, $subject, $msg, "From: $email\r\nReply-To: $email\r\nReturn-Path: $email\r\n");
                ?>
    
                      <!-- Message sent! (change the text below as you wish)-->
                      <div style="text-align:center;">
                        <h1>Thank You</h1>
                           <p>Thanks, <b><?=$name;?></b>.  Your input is important to us.</p>
                      </div>
                      <!--End Message Sent-->
    
    
                <?php
                    }
                }
    
                if(!isset($_POST['send']) || $error != '')
                {
                ?>
    
                <center><h1>Contact Us</h1></center>
                <!--Error Message-->
                <?=$error;?>
    
                <form  method="post" name="contFrm" id="contFrm" action="">
    
    
                          <label><span class="required">*</span> Name:</label>
                			<input name="name" type="text" class="box" id="name" size="30" value="<?=$name;?>" />
    
                			<label><span class="required">*</span> Email: </label>
                			<input name="email" type="text" class="box" id="email" size="30" value="<?=$email;?>" />
    
                			<label><span class="required">*</span> Subject: </label>
                			<input name="subject" type="text" class="box" id="subject" size="30" value="<?=$subject;?>" />
    
                     		<label><span class="required">*</span> Message: </label>
                     		<textarea name="message" cols="35" rows="3"  id="message"><?=$message;?></textarea>
    						<br>
                			<label><span class="required">*</span> Spam: <b>2 + 3=</b></label>
    						<input name="spamcheck" type="text" class="box" id="spamcheck" size="4" value="<?=$spamcheck;?>" /><br /><br />
    
                			<!-- Submit Button-->
                     		<center><input name="send" type="submit" class="button" id="send" value="" /></center>
    
                </form>
    
                <!-- E-mail verification. Do not edit -->
                <?php
                }
    
                function isEmail($email)
                {
                    return(preg_match("/^[-_.[:alnum:]]+@((([[:alnum:]]|[[:alnum:]][[:alnum:]-]*[[:alnum:]])\.)+(ad|ae|aero|af|ag|ai|al|am|an|ao|aq|ar|arpa|as|at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|biz|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|com|coop|cr|cs|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|edu|ee|eg|eh|er|es|et|eu|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gh|gi|gl|gm|gn|gov|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|in|info|int|io|iq|ir|is|it|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly|ma|mc|md|mg|mh|mil|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|museum|mv|mw|mx|my|mz|na|name|nc|ne|net|nf|ng|ni|nl|no|np|nr|nt|nu|nz|om|org|pa|pe|pf|pg|ph|pk|pl|pm|pn|pr|pro|ps|pt|pw|py|qa|re|ro|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr|st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zw)$|(([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5])\.){3}([0-9][0-9]?|[0-1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-5]))$/i"
                            ,$email));
                }
                ?>
                <!-- END CONTACT FORM -->
         
         </div> <!-- /contentForm -->
         
    </body>
    </html>

