CODEWITHSUNDEEP
phpjqueryajaxarraysmultidimensional-array
Danny
Danny

Reputation: 1003

Array being chopped off over ajax post. Ajax posting limit?

I have a multidimensional array, which consists of 426 smaller arrays, which also comprise of 4 attributes.. Below is an example of one of 426 arrays...

    array( //Main array
          0 => array( //1 of 426 arrays
               'name' => 'Danny', 
               'email' => '[email protected]', 
               'picture_url' => 'http://www.website.com', 
                'score' => 89
          ),
    )

I'm posting this array with jquery's ajax functions to a php file, which adds them to a database... My problem is that the array seems to be chopped off when it's posted to the php file. Only about half the array actually reaches the php file...

This has led me to believe that there may be a file size limit when posting over ajax. However, the size of my array seems to be relatively small..

I'm running my application on WAMP..

Can anyone shed some light what's possibly happening?

UPDATE:

I'm posting my array like so:

$.ajax({
  type: "POST",
  url: "invite_friends.php",
  data: {
    theID: me.id,
    friends: multidimensional_array //This is the array <---
  },
  success: function(data, textStatus, jqXHR) {
    return console.log(data);
  },
  error: function(jqXHR, textStatus, errorThrown) {
    return alert("Error: Oops, there has been a problem");
  }
});

And I retrieve my array (in invite_friends.php) like so..

if($_POST['friends']) {
    $friends = $_POST['friends'];   
} else {
    $friends = FALSE;
}

Upvotes: 8

Views: 9109

Answers (4)

Andrew
Andrew

Reputation: 701

You should convert all your data in json format at the client side and send it as a text. 

var jsonDataString = JSON.stringify(data)
//data - array, associative array, any other variables

$.ajax({
...
    data: {
        friends: jsonDataString,
    }
...
});

At the server side just decode json file.

<?php
...
$friendsJsonString = $_POST['friends'];
$friends = json_decode($friendsJsonString);
...

Changing of php.ini is not a good idea because of security risks.

Upvotes: 8

user6466879
user6466879

Reputation: 11

I have the exact same problem.

$.ajax({data:{x:x,y:y}});

Finally it turns out that some of the values are date format (object). When they are converted to simple types (string or integer), the problem is solved. Hope this can help.

Upvotes: 1

FastTrack
FastTrack

Reputation: 8980

You need to open your php.ini file and set (or create) this line:

max_input_vars = 1000000

max_input_vars has a default value of 1000, which will cut off an array at 1000 total elements. Just change it to a really high number (in my case, I needed to set it to one million).

From the PHP Manual:

How many input variables may be accepted (limit is applied to $_GET, $_POST and $_COOKIE superglobal separately). Use of this directive mitigates the possibility of denial of service attacks which use hash collisions. If there are more input variables than specified by this directive, an E_WARNING is issued, and further input variables are truncated from the request. This limit applies only to each nesting level of a multi-dimensional input array.

Keep in mind: As the manual says, this default limit was put in place to prevent denial of service attacks.

Hope this helps even though this is an old question.

Upvotes: 16

Alex
Alex

Reputation: 1668

Try setting your php_value post_max_size to at least 16M in your .htaccess and max_input_time so that you do not get a time out.

php_value post_max_size 16M
php_value max_input_time 4000

Upvotes: 0

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