PHP: Submitting form data via $_POST works for all fields except radio buttons -

i new php , hope can me this.

i have html form number of inputs , textareas. on submit pass form php page generates email values.

for text inputs , textareas works intended radio buttons can't show me value on targetted page.

the radio buttons follows , classes used there apply css. there 1 form on submitting page, radios have same name ("requesttype") , there no other elements using name.
also, added quick javascript snippet testing alert value on change , worked well, issue seems $_post.

can tell me doing wrong here or alternatives try here ?

my html (on submitting page):

<input type="radio" class="customradio radiodefault" id="requesttype1" name="requesttype" value="value1" />     <label for="requesttype1">value1</label> <input type="radio" class="customradio triggerdiv" id="requesttype2" name="requesttype" value="value2" />     <label for="requesttype2">value2</label> 

my php (on targetted page):

$_post["requesttype"] 

update:
per riggsfolly tried check whether recognises radio button checked seems does, doesn't return following returns "xx":

if(isset($_post['requesttype'])){     $theselectedone = $_post['requesttype'];     echo "radio value: x" . $theselectedone . "x"; }else{     echo "boohoo"; } 

radio buttons (and checkboxes) passed form in either $_post or $_get arrays if checked. notice not auto check 1 of them create html nothing returned if user makes no selection.

so best way test if checked or not test existance of name in $_post array

if ( isset( $_post['requesttype'] ) ) {     // selection made     // test value see 1 checked     $theselectedone = $_post['requesttype']; }