html - PHP: Bootstrap Radio button value not showing -

i have bootstrap form 3 radio buttons. saving value variable can use save database , email.

html:

<form class="form-horizontal form-validate" id="signup-form" method="post"> <input type="hidden" name="signupform" />  <div class="control-group">   <label class="control-label">seed program</label>   <div class="controls">   <input type="radio" name="signup" value="seed program" checked="checked"/>   </div> </div>  <div class="control-group">   <label class="control-label">gift wrap program</label>       <div class="controls">   <input type="radio" name="signup" value="gift wrap" />   </div> </div>  <div class="control-group">   <label class="control-label">sign both</label>    <div class="controls">   <input type="radio" name="signup" value="both" />   </div> </div>  <input type="submit" class="btn btn-large btn-block btn-success" value="submit" name="submit"> </form> 

php:

if(isset($_post['signupform'])){    if(isset($_post['signup'])) {     $signup = $_post["signup"];   }   else{     $signup = "nothing selected";   }  } 

the problem:

the problem can value of first radio button has "checked" attribute. if select of other two, wont , value shows empty.

any appreciated.

thanks,

try using

 <input type="radio" name="signup" value="seed program" checked /> 

and not

 <input type="radio" name="signup" value="seed program" checked="checked"/>