html - confusion with jquery , ajax post -


i have simple html page , , using jquery/ajax , trying send simple json file php server.the behavior of script though confusing..

first of tried , have found on web(other questions) :

script1

var data = {"deviceuuid":"lssfds998", "os":"bb", "pushtoken":"l1355436gdfsfdsl"};  $.ajax({                          type: "post",                          url: "http://192.138.4.115/server_cityinfo/register.php",                          data: data,                          contenttype: "application/json; charset=utf-8",                          datatype: "json"                          }).success(function(response, status, xhr){                              console.log(response);                              console.log(status);                              console.log(xhr);                         });

script1 , sends empty (null) json file server.

script2

var data = {"deviceuuid":"lssfds998", "os":"bb", "pushtoken":"l1355436gdfsfdsl"};  $.ajax({                          type: "post",                          url: "http://192.168.4.113/server_cityinfo/register.php",                          data: data,                          //contenttype: "application/json; charset=utf-8",                          datatype: "json"                          }).success(function(response, status, xhr){                              console.log(response);                              console.log(status);                              console.log(xhr);                         });

in script2 , comment line contenttype: "application/json; charset=utf-8" results better , on server side like: deviceuuid=lssfds998&os=bb&pushtoken=l1355436gdfsfdsl. still not in json form need it.

script3

var data = '{"deviceuuid":"lssfds998", "os":"bb", "pushtoken":"l1355436gdfsfdsl"}';  $.ajax({                          type: "post",                          url: "http://192.168.4.113/server_cityinfo/register.php",                          data: data,                          //contenttype: "application/json; charset=utf-8",                          datatype: "json"                          }).success(function(response, status, xhr){                              console.log(response);                              console.log(status);                              console.log(xhr);                         });

in script3 , data variable string.. see , wrap inside ' '. time , do json correctly on server.

however when comment datatype: "json" line , json correctly on server. whats going on here? have feeling , cant encode data json in end have manually. wrong though? need specify datatype , contenttype in request? if make data fine json string , : '{"deviceuuid":"lssfds998", "os":"bb", "pushtoken":"l1355436gdfsfdsl"}' , send without using aforementioned parameters , correct?

for fulfilling purposes how server script looks :

// use php://input raw $_post results. $json = file_get_contents('php://input'); $json_post = json_decode($json, true);  //creating variables received json $deviceudid = $json_post['deviceuuid']; $os = $json_post['os']; $pushtoken = $json_post['pushtoken'];

have on following changes.

your json array should :

    arr = '[             {                 "deviceuuid": "lssfds998",                 "os": "bb",                 "pushtoken": "l1355436gdfsfdsl"        }     ]';  $.ajax ({      type: "post",      url: " domain/server_cityinfo/register.php",      data: {data:arr},      success : function(result)      {          //      }  });

and server side :

<?php $data = $_post['data']; $json = json_decode($data);  // json array ?>

hope work. thanks


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