Retrive an Array from JSON using PHP

Question

$data_array = [
 ["","","","2",""],
 ["","1","","",""]
 ];
 $myJSONString = json_encode($data_array);
 $my = [
 "id"=> "1",
 "name" => "easy",
 "data" => $myJSONString,
 ];
 $myJSON_File->add($my);

I want to store a matrix in JSON and then retrieve it to send it later to a javascript function. I tried but when I send it to JS function, the matrix is sent as a string. I also tried decoding it $myArray = json_decode($output); but that didn't work either.

Answer 1

The way of "sending" it as a string is correct, you simply have to parse the string to get a javscript object / array to work with like this.

Use json_encode to get a string in the php file.

let string_example = '{"someVariable":"123"}'; //the string you retrieve from php
console.log(string_example);
let retrieved_obj = JSON.parse(string_example);
console.log(retrieved_obj.someVariable);