<?php
$recipient_email    = "my@email.com"; //recepient
$from_email         = "my@email.com"; //from email using site domain.


if(!isset($_SERVER["HTTP_X_REQUESTED_WITH"]) AND strtolower($_SERVER["HTTP_X_REQUESTED_WITH"]) != "xmlhttprequest") {
    die("Sorry Request must be Ajax POST"); //exit script
}

if($_POST){
    
    $sender_paypal     = filter_var($_POST["paypal"], FILTER_SANITIZE_STRING); //capture sender name
    $sender_name     = filter_var($_POST["name"], FILTER_SANITIZE_STRING); //capture sender name
    $sender_email     = filter_var($_POST["email"], FILTER_SANITIZE_STRING); //capture sender email
    $phone_number   = filter_var($_POST["phone"], FILTER_SANITIZE_NUMBER_INT);
    $date        = filter_var($_POST["date"], FILTER_SANITIZE_STRING);

    $attachments = $_FILES["file_attach"];
    
    
    //php validation, exit outputting json string
    if(strlen($sender_paypal)<4){
        print json_encode(array("type"=>"error", "text" => "Paypal is too short or empty!"));
        exit;
    }    
    if(strlen($sender_name)<4){
        print json_encode(array("type"=>"error", "text" => "Name is too short or empty!"));
        exit;
    }
    if(!filter_var($sender_email, FILTER_VALIDATE_EMAIL)){ //email validation
        print json_encode(array("type"=>"error", "text" => "Please enter a valid email!"));
        exit;
    }
    if(!$phone_number){ //check for valid numbers in phone number field
        print json_encode(array("type"=>"error", "text" => "Enter only digits in phone number"));
        exit;
    }
    if(strlen($date)<3){ //check emtpy date
        print json_encode(array("type"=>"error", "text" => "date is required"));
        exit;
    }

    
    $file_count = count($attachments["name"]); //count total files attached
    $boundary = md5("sanwebe.com"); 
    
    //construct a message body to be sent to recipient
    $message_body =  "Message from Your Web\n\n\n";
    $message_body .=  "Paypal No: $sender_paypal\n\n";
    $message_body .=  "Name: $sender_name\n\n";
    $message_body .=  "Date: $date\n\n";
    $message_body .=  "Phone No: $phone_number\n\n";
    $message_body .=  "Email: $sender_email\n";
    
    if($file_count > 0){ //if attachment exists
        //header
        $headers = "MIME-Version: 1.0\r\n"; 
        $headers .= "From:".$from_email."\r\n"; 
        $headers .= "Reply-To: ".$sender_email."" . "\r\n";
        $headers .= "Content-Type: multipart/mixed; boundary = $boundary\r\n\r\n"; 
        
        //message text
        $body = "--$boundary\r\n";
        $body .= "Content-Type: text/plain; charset=ISO-8859-1\r\n";
        $body .= "Content-Transfer-Encoding: base64\r\n\r\n"; 
        $body .= chunk_split(base64_encode($message_body)); 

        //attachments
        for ($x = 0; $x < $file_count; $xPP){       
            if(!empty($attachments["name"][$x])){
                
                if($attachments["error"][$x]>0) //exit script and output error if we encounter any
                {
                    $mymsg = array( 
                    1=>"The uploaded file exceeds the upload_max_filesize directive in php.ini", 
                    2=>"The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form", 
                    3=>"The uploaded file was only partially uploaded", 
                    4=>"No file was uploaded", 
                    6=>"Missing a temporary folder" ); 
                    print  json_encode( array("type"=>"error",$mymsg[$attachments["error"][$x]]) ); 
                    exit;
                }
                
                //get file info
                $file_name = $attachments["name"][$x];
                $file_size = $attachments["size"][$x];
                $file_type = $attachments["type"][$x];
                
                //read file 
                $handle = fopen($attachments["tmp_name"][$x], "r");
                $content = fread($handle, $file_size);
                fclose($handle);
                $encoded_content = chunk_split(base64_encode($content)); //split into smaller chunks (RFC 2045)
                
                $body .= "--$boundary\r\n";
                $body .="Content-Type: $file_type; name=".$file_name."\r\n";
                $body .="Content-Disposition: attachment; filename=".$file_name."\r\n";
                $body .="Content-Transfer-Encoding: base64\r\n";
                $body .="X-Attachment-Id: ".rand(20000,99999)."\r\n\r\n"; 
                $body .= $encoded_content; 
            }
        }

    }else{ //send plain email otherwise
       $headers = "From:".$from_email."\r\n".
        "Reply-To: ".$sender_email. "\n" .
        "X-Mailer: PHP/" . phpversion();
        $body = $message_body;
    }
        
    $sentMail = mail($recipient_email, $sender_email, $body, $headers);
    if($sentMail) //output success or failure messages
    {       
        print json_encode(array("type"=>"done", "text" => ""));
        exit;
    }else{
        print json_encode(array("type"=>"error", "text" => "Could not send mail! Please check your PHP mail configuration."));  
        exit;
    }
}
?>