send array with jquery ajax

Question

I have this jquery code:

        var myarr = ["aa","ss","dd"];

        $.ajax({
            url: "proces.php",
            data: "arr="+myarr,
            type: "POST",
            success: function () {
                alert("data is send");
            }
        });

I see message data is send but in proces.php file I have this code

$str = '';
foreach ($_POST['arr'] as $k=>$v) {
    $str = $str.$v;
}

$hand = fopen("t.txt","w+");
fwrite($hand,$str);

and in file t.txt nothing is written, please tell where I wrong ?

techfoobar · Accepted Answer · 2012-11-06 16:26:40Z

5

You can send it as:

$.ajax({
    url: "proces.php",

    data: 'arr=' + JSON.stringify({arr: myarr}),

    type: "POST",
    success: function () {
        alert("data is send");
    }
});

And on the server side, you can read it as:

$arr = jsondecode($_POST['arr']);

foreach($x in $arr->arr) {
   // stuff
}

answered Nov 6, 2012 at 16:26

techfoobar

66.8k14 gold badges117 silver badges138 bronze badges

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

1 Comment

Quentin Over a year ago

The output of JSON.stringify is a string, not an array.

Quentin · Accepted Answer · 2012-11-06 17:37:41Z

3

If you stringify an array and append it to arr= then you get:

arr=1,2,3

but the standard way of sending an array of data over HTTP is:

arr=1&arr=2&arr=3

PHP has an extra requirement. It expects the name to end in []

arr[]=1&arr[]=2&arr[]=3

Don't try to build the form encoded data yourself. Let jQuery do it. It defaults to generating PHP style key names for arrays and will take care of any escaping needed due to characters which have special meaning in URIs (e.g. if your data included a &).

Change:

data: "arr="+myarr,

to

data:{ "arr": myarr },

Then in PHP $_POST['arr'] will be an array.

edited Nov 6, 2012 at 17:37

answered Nov 6, 2012 at 16:31

Quentin

949k136 gold badges1.3k silver badges1.4k bronze badges

Collectives™ on Stack Overflow

send array with jquery ajax

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related