jquery - PHP array to javascript conversion altering the index values -

i have javascript function gets user info database via ajax. has following code.

var temp_id = new object; function checkrequests() {     $.ajax({         url: "bin/inc/classes/mechanism_class.php",         type: "post",         data: {'checkrequest': '1'},         success: function(data1) {             for(var i=0; i<jquery.parsejson(data1).length; i++) {                 $.ajax({                     url:"bin/inc/classes/mechanism_class.php",                     type: "post",                     data: {'checkrequest2': jquery.parsejson(data1)[i]},                     success: function(data) {                         requestpopper(data);                     }                 }).error(function() {                  });             }          }     }).error(function() {      }); }  function requestpopper(data) {     var id = jquery.parsejson(data)[0];     var firstname = jquery.parsejson(data)[1];     var lastname = jquery.parsejson(data)[2];     var imagedir = jquery.parsejson(data)[3];     var imageext = jquery.parsejson(data)[4];     var imgsrc = 'uploads/'+imagedir+'/'+'thumbs/'+imagedir+'size2.'+imageext;     if($('#'+'requests_content_'+id).length == 0) {         if($('.requests_content').length == 0) {             $('#requests').after('<div id="dropdown_1"><div class="requests_content" id="requests_content_'+id+'"><a href='+'profile.php?user='+id+'><img src='+imgsrc+' width="60" height="60" class="senders_image"></a><a id="senders_name" href='+'profile.php?user='+id+'>'+firstname + ' ' +lastname+'</a><div id="acceptbutton">accept</div><div id="rejectbutton">reject</div></div></div>');             temp_id.id = id;         } else {             $('#'+'requests_content_'+temp_id.id).after('<div class="requests_content" id="requests_content_'+id+'"><a href='+'profile.php?user='+id+'><img src='+imgsrc+' width="60" height="60" class="senders_image"></a><a id="senders_name" href='+'profile.php?user='+id+'>'+firstname + ' ' +lastname+'</a><div id="acceptbutton">accept</div><div id="rejectbutton">reject</div></div>');         }     }  } 

also, php class handles ajax requests has following code

class requestsandalerts { public function hasrequests() {     if(isset($_post['checkrequest'])) {         $current_user =  $_session['cred_regiden'];         $query1 = "select * `requests` `reqreceiver` = '$current_user'  order `sentdatetime` desc";         $senders = array();         if($query_run1 = mysql_query($query1)) {             while($res = mysql_fetch_assoc($query_run1)) {                 $sender = $res['reqsender'];                 array_push($senders, $sender);             }         }         echo json_encode($senders);     } }  public function sendrequestinfo() {     if(isset($_post['checkrequest2'])) {         $sender = $_post['checkrequest2'];         $current_user = $_session['cred_regiden'];         $info_request_senders = array();         $query1 = "select * `user_credentials` `cred_regiden` = '$sender'";         $query2 = "select * `prof_image` `cred_regiden` = '$sender'";         if($query_run1 = mysql_query($query1)) {             while($res = mysql_fetch_assoc($query_run1)) {                 $info1 = $res['cred_regiden'];                 $info2 = $res['cred_fname'];                 $info3 = $res['cred_lname'];                 array_push($info_request_senders, $info1);                 array_push($info_request_senders, $info2);                 array_push($info_request_senders, $info3);             }         }         if($query_run2 = mysql_query($query2)) {             while($res2 = mysql_fetch_assoc($query_run2)) {                 $info4 = $res2['image_dir'];                 $info5 = $res2['image_extension'];                 array_push($info_request_senders, $info4);                 array_push($info_request_senders, $info5);             }         }         echo json_encode($info_request_senders);     } } $raa = new requestsandalerts; $raa->hasrequests(); $raa->sendrequestinfo(); 

now, want extract data of people has sent current user friend request. testing purpose sent user1 2 friend requests user2 , user3 , log in user1 account, when press requests button, on first click user1's info div @ top , user2's info div @ bottom.. here.. when click again, swap places.. in irregular pattern. don't want happen. want user1 on top , user2 on bottom of him according request sent first. did in mysql.. arranged requests in desc order in mysql.. should have arranged div "user1 on top" , "user2 on bottom".. happens randomly.

i guess due fact json_encode randomizes indexes of array.. i'm not sure.. me guys... point out i'm wrong.

the problem multiple ajax call.

note ajax asynchronous http request

example have user1 , user2, in loop first ajax call initialized getting user1 details, hence ajax asynchronous not wait requst. tt send next ajax request getting user2 results. if request 2 completes before req1 .then above error.

solution:
1. user details in first ajax call itself.
or
2 .make second ajax call synchronous.

i choose first option.