php - How to get Double Buttons to "fire" in Bootstrap -

i have bootstrap form double buttons (2) shown below.

• the submit button fires , returns processing page (i.e., ['php_self'])
• however, cancel button nothing

how can both buttons fire , return processing page?

<form class="form-horizontal" method="post"> <fieldset>  <legend>my form<</legend>  <div class="form-group">   <label class="col-md-4 control-label" for="submit"></label>   <div class="col-md-8">     <button id="submit" name="submit" class="btn btn-primary" value="1" type="submit">update profile</button>     <button id="cancel" name="cancel" class="btn btn-default" value="0" type="submit">cancel update</button>   </div> </div>  </fieldset> </form> 

appended (per threaded comment @fred): added type="submit" both buttons did not make work. this answer -- works when add type="submit"

appended: here server-side code has been proof cancel button nothing -- didn't think needed prove why cancel button did not work -- thinking experienced bootstrap developer have know right off bat missing:

<?php //this server-side   if( $_post['cancel'] ) {     echo 'cancel button pressed';   }   elseif( $_post['submit'] ) {     echo 'submit button pressed';   } ?> 

problem here you're using on same page, html form , php.

the reason why it's failing because need use isset() both of post arrays.

<?php //this server-side   if(isset($_post['cancel'] )) {     echo 'cancel button pressed';   }   if(isset($_post['submit'] )) {     echo 'submit button pressed';   } ?> 

error reporting have helped here.

• http://php.net/manual/en/function.error-reporting.php

• use type="submit" buttons.

this answer based on posted html form , php. if javascript used here, type of "firing" mechanism needed.

if want return processing page, can use header redirect or meta refresh or js solution.

consult following on stack on doing redirect:

• how make redirect in php?

---

another option give both buttons same name attribute, , doing:

html

<input type="submit" name="action" value="update profile" /> <input type="submit" name="action" value="cancel update" /> 

php

if ($_post['action'] == 'update profile') {     //action update here } else if ($_post['action'] == 'cancel update') {     //action delete } else {     //invalid action! } 

the above borrowed answer on stack https://stackoverflow.com/a/547848/

you can replace input types buttons , using <button type="submit" ...>