Get array of strings from json with json_decode

Question

Seems like an easy thing, but I am not getting the expected data. I want to send an array of strings to my backend and then iterate/do stuff with them.

In the frontend I have:

var jsonArray = ["String1", "String2"]
await newFile(JSON.stringify(jsonArray));

In my controller, I have:

$requestData = json_decode($request->getContent(), true); 
$this->logger->info("File request data is ", [ $requestData ]);

My logger outputs:

File request data is ["[\"String1\",\"String2\"]"]

Which is not an array, but a string.

If I do it inside of php with

$txt = ["Test", "Test2"];
$json = json_encode($txt, true);

print_r(json_decode($json));

The output would be an array. Where am I going wrong or what am I missing? Having the true option in json_decode should return me my array.

Well, if you need to decode it twice on backend means obviously that you've serialized it one time in excess on frontend — Cid
– Cid, Commented Dec 2, 2021 at 15:21

jspit · Accepted Answer · 2021-12-02 21:14:30Z

1

This

["Test", "Test2"]

is an Array, and this

"[\"String1\",\"String2\"]"

is a string. json_decode() need a string as parameter.

$jsonString = "[\"String1\",\"String2\"]";
$array = json_decode($jsonString, true);

var_dump($array);

/*
array(2) {
  [0]=>
  string(7) "String1"
  [1]=>
  string(7) "String2"
}
*/

answered Dec 2, 2021 at 21:14

jspit

7,8011 gold badge12 silver badges21 bronze badges

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

Collectives™ on Stack Overflow

Get array of strings from json with json_decode

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related