Jquery post a Array

similar to iBlue's comment, You can just send an object with post; you don't have to define the object in the post function, { } are simply the delimiters to define objects, which are similar to PHP associative arrays:

$.post('reciever.php', myData, function(data){ /*callback*/ });

The only thing is that you setup myData as an object like follows:

myData = {
     0: 'info',
     1: 'info'
}

//or even something like this

myData = {
     someProp: 'info',
     someProp2: {
         anotherProp: 'moreInfo'
     }
 }

you can also use non-numerical indexes with objects, and easily add properties:

myData[2] = 'info';

or you can loop through it, just in a slightly different way:

for(i in myData){
     myData[i]; //Do something with myArr[i]
}

the for in loop will also loop through non-numerical properties. And you can still get the length of myData by

myData.length;

EDIT:

Instead of sending a string:

IDs = {}
Names = {}

for(var i = 0; i < result.data.length; i++){
    IDs[i] = result.data[i].id;
    Names[i] = result.data[i].name;
}
$.post('reciever.php', {IDs: IDs, Names: Names}, function(data){});

In the PHP file you would access them like so

$_POST['IDs'][0] = "some id";
$_POST['Names'][0] = "some name";

EDIT:

$_POST['IDs']['0']

Not sure, but it seems like you want to do this:

var sendObj = {};
for (var i=0; i<result.data.length; i++) {
    var id = result.data[i].id,
        name = result.data[i].name; // or some similiar computation
    sendObj[name] = id;
}   
$.post("receiver.php", sendObj, function(data){ console.log(data);});

This will send the result.data as name=id-value-pairs.