php - error 500 (Internal Server Error) with using ajax in codeigniter -


i used simple ajax function in code , it's work in local host, when upload code did not work! script in view:

    <script type="text/javascript"> function active(int) { if (window.xmlhttprequest)   {// code ie7+, firefox, chrome, opera, safari   xmlhttp=new xmlhttprequest();   } else   {// code ie6, ie5   xmlhttp=new activexobject("microsoft.xmlhttp");   }   xmlhttp.onreadystatechange=function()   {   if (xmlhttp.readystate==4 && xmlhttp.status==200)     {     document.getelementbyid("frm_radio").innerhtml=xmlhttp.responsetext;     }   }  xmlhttp.open("get","<?php echo site_url("admin/groups/active_img/".$gallery_name."/".$gallery_id)."/"?>"+int,true); xmlhttp.send(); } </script>

and html code: 

<form id = "frm_radio">  .  .  .  <input type="radio" id="radio" name="active" value="'.$item -> id.'"    onclick="active(this.value)"/>  .  .  . </form>

and in controller have function name active_img

function active_img($gallery_name, $gallery_id, $itemid) {          $name = $gallery_name . "_id";         $actived = $this -> gallery_model -> getitems(null, array("active" => 1,      $name => $gallery_id));         $actived[0] -> active = 0;         $this -> gallery_model -> additem($actived[0], $actived[0] -> id);         $insert_vars["active"] = 1;         $this -> gallery_model -> additem($insert_vars, $itemid);         return true;     }

there radio button chose image must active , , when called function active_img , change value in data base , return true, worked in localhost in server it's not working! , when debug code error :

get http://example.com/admin/groups/active_img/products/4/10 500 (internal server error) 4:146 active 4:146 onclick 4:183 xhr finished loading: "http://example.com/admin/groups/active_img/products/4/10".

it's php error reason explained in error_log. there error_log in root directory of web site? there logs folder somewhere else? reason detailed in there.

if use .htaccess check again.


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