i have many value in form php

i want send email and auto replay email via ( mail function )

problem is i want send many odds

i mean the form sent email by content by different possibilities

- send link program 1 only

- send link program 2 only

- send link program 3 only

- send link program 1-2 only

- send link program 1 - 3 only

- send link program 2 -3 only

- send link program 1-2-3


this code php
PHP Code:

<?php
$first_name 
$_POST['first_name_1'];
 
$last_name $_POST['last_name'];
 
$middle_name $_POST['middle_name'];
 
$Street_Address $_POST['adress1'];
$Email_Address  $_POST['emailadrres'];
 
$program1 $_POST['inputvalue11'];
 
$inputvalue $_POST['inputvalue1'];
$inputvalue2 $_POST['inputvalue2'];
 
$program2 $_POST['inputvalue22'];
$inputvalue3 $_POST['inputvalue3'];
 
$program3 $_POST['inputvalue33'];
$inputvalue4 $_POST['inputvalue4'];
 
$program4 $_POST['inputvalue44'];
 
$inputvalue5 $_POST['inputvalue5'];
 
$program5 $_POST['inputvalue55'];
$inputvalue6 $_POST['inputvalue6'];
 
$program6 $_POST['inputvalue66'];
 
 
$toaddress "myemail@domain";
 
$subject "subject";
 
$subject2 "Confirmation";
 
 
 
$all=
 
"
 First Name: "
.$first_name."\r\n
 Last name: "
.$last_name."\r\n
 middle name: "
.$middle_name."\r\n
 Street Address: "
.$Street_Address."\r\n
Email Address: "
.$Email_Address."\r\n
 Estimated Total1: "
.$inputvalue1."\r\n
 program: "
.$program1."\r\n
 
 --------------------------------
 Estimated Total2  : "
.$inputvalue2."\r\n
 program2  : "
.$program2."\r\n
Estimated Total3  : "
.$inputvalue3."\r\n
 program3  : "
.$program3."\r\n
Estimated Total4  : "
.$inputvalue4."\r\n
 program4  : "
.$program4."\r\n
 Estimated Total5  : "
.$inputvalue5."\r\n
 program5  : "
.$program5."\r\n
Estimated Total6  : "
.$inputvalue6."\r\n
 program6  : "
.$program6."\r\n
 
$mailheaders = "From$Email_Address\r\n";
 
$mailheaders .= "Tomyemail@domain.com\r\n";
 
$mailheaders .= "MIME-Version1.0\n";
 
$mailheaders .= "Content-typetext/htmlcharset=iso-8859-1\n";
 mail("
$toaddress", "$subject", "$all", "$mailheaders");  //main mail to admin
 mail("
$Email_Address", "$subject2", "$message", "$mailheaders");  // auto replay to user contain link program
 echo("
thanks.");
 
 die;
 ?>