Sending JSON to PHP using ajax

Question

I want to send some data in json format to php and do some operation in php  My problem is i can t send json data via ajax to my php file Please help me how can i do that  I have tried this way     lt script gt    function          add-cart   click function        var bid     bid   val        var myqty new Array       var myprice new Array        qty1     qty10   val        qty2     qty11   val        qty3     qty12   val         price1     price1   val        price2     price2   val        price3     price3   val         var postData                                           bid  bid                       location1   1   quantity1  qty1  price1  price1                       location2   2   quantity2  qty2  price2  price2                       location3   3   quantity3  qty3  price3  price3                       var dataString   JSON stringify postData          ajax               type   POST               dataType   json               url   add cart php               data   myData dataString               contentType   application json  charset utf-8               success  function data                   alert  Items added                               error  function e                   console log e message                                  lt  script gt    And in PHP i use   if isset   POST  myData        obj   json decode   POST  myData        some php operation     When in add print r   POST  in php file  it shows array 0     in firebug

User · Answer

To send javascript obj to php using json and ajax:

js:

var dataPost = {
   "var": "foo"
};
var dataString = JSON.stringify(dataPost);

$.ajax({
   url: 'server.php',
   data: {myData: dataString},
   type: 'POST',
   success: function(response) {
      alert(response);
   }
});

to use that object in php:

$obj = json_decode($_POST["myData"]);

echo $obj->var;

User · Answer

That s because   POST is pre-populated with form data   To get JSON data  or any raw input   use php   input    json   json decode file get contents  php   input

User · Answer

I believe you could try something like this   var postData                                   bid  bid                   location1   1   quantity1  qty1  price1  price1                   location2   2   quantity2  qty2  price2  price2                   location3   3   quantity3  qty3  price3  price3                 ajax           type   POST           dataType   json           url   add cart php           data  postData          success  function data               alert  Items added                       error  function e               console log e message                   the json encode should happen automatically  and a dump of your post should give you something like   array       bid   gt bid       location1   gt  1        quantity1   gt qty1       price1   gt price1       location2   gt  2        quantity2   gt qty2       price2   gt price2       location3   gt  3        quantity3   gt qty3       price3   gt price3

User · Answer

You are tryng to send js array with js object format   Instead of use   var a   new array    a  something         try   var a   new Object    a something

User · Answer

If you want to get the values via the   POST variable then you should not specify the contentType as  application json  but rather use the default  application x-www-form-urlencoded  charset UTF-8    JavaScript   var person     name   John        ajax         contentType   application json      php   input     contentType   application x-www-form-urlencoded  charset UTF-8        POST     dataType    json       method   POST       url   http   localhost test test php       data   data  person      done function data          console log  test     data           result   text data name       fail function data        console log  error     data         PHP    lt  php       POST   jsonString     POST  data      newJsonString   json encode  jsonString   header  Content-Type  application json    echo  newJsonString    Else if you want to send a JSON from JavaScript to PHP   JavaScript   var person     name   John        ajax       contentType   application json      php   input       contentType   application x-www-form-urlencoded  charset UTF-8        POST     dataType    json       method   POST       url   http   localhost test test php       data  person     done function data          console log  test     data           result   text data name       fail function data        console log  error     data         PHP    lt  php   jsonString   file get contents  php   input     phpObject   json decode  jsonString     newJsonString   json encode  phpObject   header  Content-Type  application json    echo  newJsonString

User · Answer

Lose the contentType   application json  charset utf-8     You re not sending JSON to the server  you re sending a normal POST query  that happens to contain a JSON string    That should make what you have work   Thing is  you don t need to use JSON stringify or json decode here at all   Just do   data   myData postData     Then in PHP    obj     POST  myData

User · Answer

just remove         dataType   json   url   index php   data   myData postData     contentType   application json  charset utf-8

User · Answer

I know it s been a while  but just in case someone still needs it   The JSON object I need to pass   0  CommunityId  509  ListingKey   20281   Type  10  Name      District      Description          1  CommunityId  510  ListingKey   20281   Type  10  Name      District      Description            The Ajax code   data  JSON stringify The-data-shows-above   type   POST   datatype   JSON   contentType   application json  charset utf-8    And the PHP side   json decode file get contents  php   input       It works for me  hope it can help

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