How to use an array sent with an jQuery's AJAX post request + php?

Question

I'm trying to pass an array in an ajax request, but apparently it doesn't work...

        $.post("process.php", array,
            function(data) {
                document.getElementById("output").innerHTML = JSON.parse(data);
            });

My question is, how to use the data sent in the process file?
The array is built like that: [key (0/1/2...)] => ["prod_id"]. The id varies.
I read somewhere using $_POST["key"]; would work, but it doesn't.

It'd be even better if I could just get the array as is in the process file.

process.php (really basic - just to check wether it's working or not.):

<?php print($_POST["test"]); ?>

I don't know about sending array with jQuery but the $_POST variable would work. When you pass, you should get like $_POST['key'][0]. — MahanGM
– MahanGM, Commented Jun 24, 2012 at 14:28

Cranio · Accepted Answer · 2012-06-24 14:27:30Z

2

Try to pass {data: array} instead of array. The AJAX call expects an object.

answered Jun 24, 2012 at 14:27

Cranio

9,8764 gold badges37 silver badges55 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

thecodeparadox · Accepted Answer · 2012-06-24 14:33:34Z

2

You need to build an Object of array elements. for example:

You can also try like:

{ 'key[]': [1, 2, 3] }

OR

{ key: [1,2,3] }

Comments

charlietfl · Accepted Answer · 2012-06-24 14:48:58Z

In order to receive data in php you need to send key/value pairs, however you are only sending a value.

You receive in php with $_POST[key] which will return the value for that key.

JS:

$.post("process.php", {myAray: array}, function(data) {
            $("#output").html(data);
});

php

   $array= $_POST['myArray'];

To return this array from php as text just to test your ajax can use var_dump( $_POST) or var_dump($array);

If you intend to receive JSON in response from server, you do not need to use JSON.parse , jQuery will parse json internally. However you would need to add "json" as dataType argument to $.post

$.post("process.php", {myAray: array}, function(data) {
            /* loop over json here*/
},'json');

Emanuel Kluge · Accepted Answer · 2012-06-24 14:34:58Z

1

if you want to pass an array, you have to "prepare" the key as following:

{'key[]' : ['value1', 'value2', 'value3']}

the same way you'd do it, when you want to pass an array in a form and set the name-attribute to "key[]".

answered Jun 24, 2012 at 14:34

Emanuel Kluge

7055 silver badges10 bronze badges

2 Comments

Emanuel Kluge Over a year ago

no disrespect … bro. you were mentioning it while i was writing my post. do you feel better when i delete my post?

thecodeparadox Over a year ago

Just fine, never do that, I don't bother

Collectives™ on Stack Overflow

How to use an array sent with an jQuery's AJAX post request + php?

4 Answers 4

Comments

Comments

Comments

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

Comments

Comments

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related