How to extract decode JSON from REDCAP Array with PHP

Question

Hallo there,
I have an JSON Export from a REDCAP and it started as a nested ARRAY. I use json_decode, but when I print the result I get ERROR.

Here is the Array:

[{"record_id":"13","lastname":"Mustermann","first_name":"Json","dob":"1948-10-12","case_number":"1366613"}]

My Code is:

$deco = json_decode($json);
print $deco;

This line gives an error. What am I doing wrong?!
Thank you

Answer 1

If you decode to object, try this:
$a = $jsonObj[0]->record_id;
If array:
$a = $jsonArr[0]["record_id"];

Answer 2

Hi, print and echo can't display array or object. Try to use debug function, like print_r or var_dump.
Also, please note that json_decode returns object. If you want to get result as array, you can pass second argument as true.

Answer 3

Hello World thank you! Now I want to assign some data from this jason to variables. like $a = $demo{‘dob’}; and then echo $demo; This dost work either. How can I assign?

Answer 4

Hello World thank you! it works!