php - Get variable $_GET with ajax -

i'm trying build ajax live search.

index.php

<div class="form-group">     <div class="input-group">         <span class="input-group-addon">search</span>         <input type="text" name="search_text" id="search_text" class="form-control" />     </div> </div> <div id="result"></div>  <script> $(document).ready(function() {     load_data();     function load_data(query) {         $.ajax({             url:"new/new_fetch.php",             method:"post",             data:{query:query},             success:function(data) {                 $('#result').html(data);             }         });      }      $('#search_text').keyup(function() {          var search = $(this).val();          if(search != '') {              load_data(search);          } else {              load_data();          }     }); }); </script> 

new/new_fetch.php

$connect = mysqli_connect("localhost", "root", "root", "dbname"); if(isset($_post["query"])) {     $query = "select * subcategories category_parent = '".$_get['category']."' order subcategory"; } 

but have undefined index: category in new/new_fetch.php error.

my code works without operator.

how can $_get['category'] using ajax post method? thx

the error because never passed category variable in ajax. need below:

$.ajax({     url:"new/new_fetch.php",     method:"get",     data:{         query:query,         category:"some_value"     },     success:function(data) {         $('#result').html(data);     } }); 

update

if want accept both $_get , $_post recommend use $_request covers both , post.