sending JSON to PHP using jquery ajax

Question

I'm sending a fairly simple compilation of object to a php script using the jQuery's .ajax. I want to extract one value from each object in the PHP script. The javascript is:

var obj = [{id:1, name:"val1"}, {id:2, name:"val2"},{id:3, name:"val3"}]; $.ajax({ type: "GET", url: "call.php", contentType: "application/json", data: {type: "stream", q: JSON.stringify(obj)}, success: function(response){ alert(response); } });

The call.php file is written as:

if($_GET['type']=='stream'){ $obj = json_decode($_GET['q']); for($i=0;$obj[$i];$i++){ echo $obj[$i]->{'name'}." "; } }

However this returns 0, and I simply cannot figure out why.

Secondly a attempted using type:"POST" in the javascript, and $_POST in php, but that failed altogether.

Have you tried var_dumping $_GET in your call.php script to see what jQuery and PHP have done with your data? — cHao
– cHao, Commented Jun 4, 2012 at 18:52

thecodeparadox · Accepted Answer · 2012-06-04 18:33:10Z

3

 data: {type: "stream", q: JSON.stringify(obj)},

instead of this use

 data: {type: "stream", q: obj},

answered Jun 4, 2012 at 18:33

thecodeparadox

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Comments

charlietfl · Accepted Answer · 2012-06-04 18:59:05Z

You are missing dataType: 'json' in your ajax options. contentType option is for data being sent only.

After adding dataType, try this:

echo $_GET['q'];

It should simply return the json string you send. If not need to look at request in console for problems

hi mate, dataType is not related to send data, but for format of receive data you expecting.

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