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I have this json encoded string

{"allresponses":"{\"id\":\"123456\",\"recipients\":1}"}

and I have to get the id only and pass it to a php variable.

This is what I'm trying: suppose I have that string in variable return, so:

$return = '{"allresponses":"{\"id\":\"123456\",\"recipients\":1}"}';
$getid = json_decode($return,true);
echo $getid[0]['id'];

This is not working; I get fatal error. Can you tell me why? What's wrong?

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You've got json-in-json, which means that the value for allresponses is itself a json string, and has to be decoded separately:

$return = '{"allresponses":"{\"id\":\"123456\",\"recipients\":1}"}';
$temp = json_decode($return);

$allresp = $temp['allresponses'];
$temp2 = json_decode($allresp);

echo $temp2['id']; // 123456

Note that your $getid[0] is WRONG. You don't have an array. The json is purely objects ({...}), therefore there's no [0] index to access. Even some basic debugging like var_dump($getid) would have shown you this.

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5 Comments

Obviously, this madness should be fixed at the source, not by double decoding…
the problem is i use an API that gives me that source, so i can't fix it, lol. About $getid[0] , i used "true" in json_encode statement to make it as associated array, shouldn't it be converted form obj to array then? Ayway, i'm getting Fatal error: Cannot use object of type stdClass as array
it'll be a php array, but that still doesn't create a [0] index.
Fatal error: Cannot use object of type stdClass as array. adding ",true" at every json_decode , fixes the problem. :)
ah yeah. you have to DECODE to an assoc array: json_decode(...,true) as well. JS doesn't have associated arrays. it has objects. arrays are ALWAYS numerical-keyed, sequentially. if you have an array missing indexes, then it HAS to be encoded as an object.

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