php - form to mail script not sending data -

i have simple form 3 fields, contact_name contact_email & contact_message when submit this, data entered form not emailed me. if check being posted can see array posted:

array ( [contact_name] => paul [contact_email] => test@test.com [contact_message] => d;lkf'dskf;lsdkf )

here form code:

  <form role="form" name="form1" action="send_form_email.php" method="post">                         <div class="row">                             <div class="form-group col-xs-12 floating-label-form-group">                                 <label for="name">name</label>                                 <input class="form-control" type="text" name="contact_name" placeholder="name" id="contact_name">                             </div>                         </div>                         <div class="row">                             <div class="form-group col-xs-12 floating-label-form-group">                                 <label for="email">email address</label>                                 <input class="form-control" type="email" name="contact_email" placeholder="email address" id="contact_email">                             </div>                         </div>                         <div class="row">                             <div class="form-group col-xs-12 floating-label-form-group">                                 <label for="message">message</label>                                 <textarea name="contact_message" placeholder="message" class="form-control" rows="5" id="contact_message"></textarea>                             </div>                         </div>                         <br>                         <div class="row">                             <div class="form-group col-xs-12">                                 <button type="submit" class="btn btn-lg btn-success">send</button>                             </div>                         </div>                     </form> 

and here php script:

    <?php  // contact subject $subject ='message leeds computers';   // details $message="$contact_message";  // mail of sender $mail_from="$contact_email";   //  $header="from: $contact_name <$mail_from>";  // enter email address $to ='test@gmail.com'; $send_contact=mail($to,$subject,$message,$header);  // check, if message sent email  // display message "we've recived information" if($send_contact){ echo "we've received contact information"; } else { echo "error"; } ?> <? echo '<pre>'; print_r($_post); echo '</pre>'; ?> 

any appreciated

you have modify @ post:

// details $message=$_post["contact_message"];  // mail of sender $mail_from=$_post["contact_email"];   //  $header="from: " . $_post["contact_name"] . " <$mail_from>";