Ajax request are not async

Question

I have an ajax problem:

foreach(ids as id){
  $.ajax({
    url:\'script.php\',
    data:\'id=\'+id,
    cache:false,
  });
}

If I loop 6 ti

Answer 1

<?php
session_start();
$var1=$_SESSION['SOMEVAR'];
//get all session var
......
session_write_close();//then close it
.......
//do php script.....

.......
?>

That's awesome, it solved my issue the same as albanx, thanks

Answer 2

Why not sending all id's to the script and then loop them is faster en more accurate..

Javascript:

// you can send the whole array in once i think not for sure
$.ajax({
    url:'script.php',
    type: 'POST',
    data: ids,
    cache:false,
    success:function(msg)
    {
        // when done
    }
});

script.php:

foreach($_POST as $id)
{
    [............] // do your thing
}

Answer 3

Ok thanks. After some hours of analysing and reflecting I realized why this script goes syncronsly: I open the script.php file and I notice this and the beginig of the file:

<?php
session_start();
$var1=$_SESSION['SOMEVAR'];
.......
//do php script.....

.......
?>

So I have parallel ajax calls to a php script that uses session, but sessions in this case locks the calls to be executed syncrosnly cause of the session vars request, so the solution of this problem is:

<?php
session_start();
$var1=$_SESSION['SOMEVAR'];
//get all session var
......
session_write_close();//then close it
.......
//do php script.....

.......
?>

With session_write_close i have my script to make the ajax calls in async way. a good explain here http://konrness.com/php5/how-to-prevent-blocking-php-requests/

Answer 4

Have you tried with setting the async parameter to true?

foreach(ids as id)
{
  $.ajax({
  url:'script.php',
  async: true,
  data:'id='+id,
  cache:false,
  });
}

How have you confirmed that the calls are synchronous and not async?