jquery - What language(s) i have to use to make a success or an error situation for PHP mail form? -

i've got php mail form coded :

and appear banner coded using css , jquery, if form succeed send mail, or not :

i know language use make happens ? advices ?

here html code form :

<form id="my_form" enctype="multipart/form-data" method=post action=formmail.php>     <input type="hidden" name="subject" value="formmail">   <!-- pseudo -->  <p>      <h3>         pseudo         <font class="color-red">         * :         </font>         <span class="padding1"><input type="text" class="form-control" name="pseudo" aria-required="true" aria-invalid="false"></span></p><br>   <!-- email -->      <p>           email          <font class="color-red">              * :          </font>          <span class="your-email padding1"><input type="email" class="form-control" name="email" aria-required="true" aria-invalid="false"></span></p><br>     <!-- moto -->      <p>         quote         <font class="color-red">         * :         </font>      <span class="moto padding1"><input type="moto" class="form-control" name="moto" aria-invalid="false"></span> </p><br>      <!-- link of gif -->    <p>     link of gif     <font class="color-red">     * :     </font>      <span class="link-url padding1"><input type="link_url" class="form-control" name="link_url" aria-invalid="false"></span> </p><br>     <!-- recaptcha -->       <div align="center">     <p><div class="g-recaptcha" data-sitekey="6lehfqotaaaaamhlos6vgktrcdfo485aohwmp9cp"></div></p><br><h3>       <!-- submit -->  <p><input type="image" src="img/submitbutton.png" value="send"/><img class="ajax-loader" src="http://s584101063.onlinehome.fr/wp-content/plugins/contact-form-7/images/ajax-loader.gif" alt="envoi en cours ..." style="visibility: hidden;"></p></div>   </div> </form> 

here php :

if($_server["request_method"] === "post")     {         //form submitted          //check if other form details correct          //verify captcha         $recaptcha_secret = "my_secret_recaptcha";         $response = file_get_contents("https://www.google.com/recaptcha/api/siteverify?secret=".$recaptcha_secret."&response=".$_post['g-recaptcha-response']);         $response = json_decode($response, true);         if($response["success"] === true)         {              header("location: my_website");                  $to = "my_mail";  $subject = "submission";  $h = "from: " . $_post['email'];  $pseudo = $_post['pseudo'];  $email = $_post['email'];  $link_url = $_post['link_url'];  $moto = $_post['moto'];  $http_post_vars = $_post;   $message = "pseudo : " . $pseudo . "\n\n " . "email : " . $email . " \n\n" . "text : " . $moto . "\n\n " . "url du gif : " . $link_url;  mail($to, $subject, $message, $h);                 }            else         {             $result         }     }   ?> 

very basic idea:

$test=mail($to, $subject, $message, $h);  if($test){ echo 'email work'; }else{ echo 'email fail';  }