php - How to echo success message on same page and only upload image type file -

this code running well.i want trying solve upload image type png jpeg. , if error or success message shown on same page. , 1 thing mail going in spam box . please regarding .

<form enctype="multipart/form-data" method="post" action="">      <label>your profile pic<input type="file" name="my_file" /></label>     <label><input type="submit" name="button" value="submit" /></label> </form> <?php if($_post && isset($_files['my_file'])) {      $from_email  = 'sanjay@.com'; //from mail, mandatory hosts     $recipient_email = 'sanjay@.com'; //recipient email (most cases personal email)      //capture post data html form , sanitize them,      //$sender_name    = filter_var($_post["sender_name"], filter_sanitize_string); //sender name    // $reply_to_email = filter_var($_post["sender_email"], filter_sanitize_string); //sender email used in "reply-to" header    // $subject        = filter_var($_post["subject"], filter_sanitize_string); //get subject html form    //$message        = filter_var($_post["message"], filter_sanitize_string); //message     /* //don't forget validate empty fields     if(strlen($sender_name)<1) {        die('name short or empty!');    }     */     //get uploaded file data    $file_tmp_name    = $_files['my_file']['tmp_name'];    $file_name        = $_files['my_file']['name'];    $file_size        = $_files['my_file']['size'];    $file_type        = $_files['my_file']['type'];    $file_error       = $_files['my_file']['error'];     if($file_error > 0) {        die('upload error or no files uploaded');    }    //read uploaded file & base64_encode content mail    $handle = fopen($file_tmp_name, "r");    $content = fread($handle, $file_size);    fclose($handle);    $encoded_content = chunk_split(base64_encode($content));     $boundary = md5("sanwebe");    //header    $headers = "mime-version: 1.0\r\n";     // $headers .= "from:".$from_email."\r\n";     //$headers .= "reply-to: ".$reply_to_email."" . "\r\n";    $headers .= "content-type: multipart/mixed; boundary = $boundary\r\n\r\n";      //plain 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));      //attachment    $body .= "--$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(1000,99999)."\r\n\r\n";     $body .= $encoded_content;      $sentmail = @mail($recipient_email, $subject, $body, $headers);    if($sentmail) {         //output success or failure messages           die('thank email');    } else {        die('could not send mail! please check php mail configuration.');      } } ?> 

you can try code

if(isset($_files['pic']))     {         $target_dir = "./uploads/"; // upload directory         $pics = $_files['pic'];          //print_r($pics);         $target_file = $target_dir.$time.basename($pics["name"]); // destination path         $imagefiletype = pathinfo($target_file, pathinfo_extension); // file extension         // check uploaded file exists or not         if(file_exists($pics["tmp_name"]))         {             $check = getimagesize($pics["tmp_name"]); // image size             if(!$check)             {                 $error['pic'] = "file not image.";                 $picerr="file not image.";             }             else if($imagefiletype != "jpg" && $imagefiletype != "png" && $imagefiletype != "jpeg" && $imagefiletype != "gif")             {                 $error['pic'] = "sorry, jpg, jpeg, png & gif files allowed.";                 $picerr="sorry, jpg, jpeg, png & gif files allowed.";             }             else if(file_exists($target_file))             {                 $error['pic'] = "profile pic exists";                 $picerr="profile pic exists";             }             if(empty($error['pic']))             {                 if(!move_uploaded_file($pics["tmp_name"], $target_file))                 {                     $error['pic'] = "profile pic not uploaded";                     $picerr="profile pic not uploaded";                 }                 else                 {                     $pic = $time.$pics['name'];                 }             }         } // file exists if end         else          {             $error['pic'] = "please select image";             $picerr="please select image";         }     }