JSONArray from android to Array php

Question

I am sending through some values from android/java to a server.

First I create a JSONArray object:

JSONArray JSONsamples = new JSONArray();

then I populate the JSONArray the following way:

 for(.....)
                {
                    if(...)
                    {
                      JSONsamples.put(storedArraylist.get(i));
                    }
                }

Then I send the value through post :

userParameters.add(new BasicNameValuePair("samples", JSONsamples.toString()));
.
.
Http_Client.executeHttpPost(getApplicationContext(), POST_url, userParameters);
.

Then on the server I try to store those values into a php array, but it does not work:

 $samplesarray = $_POST["samples"];
 $samplesarray = json_decode($samplesarray,true);

Before decoding, If I echo $samplesarray , I only get the first value encapsulated in these \"value\" , after json_decode , when I echo $samplesarray I get a parameter expected but null found error.

Please help.

echo $samplesarray to see exactly what do you get and let us know — Satya
– Satya, Commented Sep 12, 2013 at 11:00
it seems that \"blood\" is what JSONsamples.toString() returns. Or maybe it is "blood" if you have enabled magic_quotes. What is the expected return value of JSONsamples.toString()? — steven
– steven, Commented Sep 12, 2013 at 11:08
what is the output of JSONSamples.toString() in your ANdroid code — Satya
– Satya, Commented Sep 12, 2013 at 11:12
The \"blood\" is not a valid JSON thats the problem I think. — Sina R.
– Sina R., Commented Sep 12, 2013 at 11:13
ignore the resulting []! it happens because you cannot json_decode a string like \"blood\". JSONsamples.toString() should return something like this: ["value1","value2","value3"] or {"key1":"value1","key2":"value2"} and you need to disable magic_quotes! — steven
– steven, Commented Sep 12, 2013 at 11:15

steven · Accepted Answer · 2013-09-12 11:32:22Z

1

Magic Quotes should be turned off because it adds a \ before your " values. This breakes the json data in your case.

Please read more about why you should not use magicquotes here: http://php.net/manual/en/security.magicquotes.whynot.php

answered Sep 12, 2013 at 11:32

steven

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Janpan · Accepted Answer · 2013-09-12 11:32:47Z

0

The solution is removing magic quotes, or at least checking if its on or not and working from there. @steven reminded me of this, thank you.

So on the server side, I do the following check to ensure correct json and it works :

$samplesarray = get_magic_quotes_gpc() ? stripslashes($_REQUEST['samples']) : $_REQUEST['samples'];

answered Sep 12, 2013 at 11:32

Janpan

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