Question

So, I should send data to PHP script (AJAX, jQuery):

 - ['item1','item2','item3']
 - action = update
 - uid = 'dsfs112'

It should received back:

 - ['item2','item3']
 - action = update
 - uid = 'dsfs112'

PHP will return my changed array

How the better way to do it?

Answer 1

If only thing you want to do is to remove the first element of the array from parameters, just use array_shift() on the array in PHP.

The basic workflow will look like this:

1. Send this data structure using POST (jQuery’s .post() will do), eg. like that;

   jQuery.post('my_script.php', {
       'array': ['item1','item2','item3'],
       'action': 'update',
       'uid': 'dsfs112',
   }, function(data){
       // data here is your JSON object
   }, 'json');
   

2. On PHP side (within my_script.php file probably):

   <?php
   array_shift($_POST['array']);
   echo json_encode($_POST);
   

And this should be all – data within your JS success callback should be then of the following structure:

{
    'array': ['item2','item3'],
    'action': 'update',
    'uid': 'dsfs112',
}