Its JSON, to convert to array use json_decode():

$string = '{"status":"2","holding":"","company":"Company","nik":"8981237","name":"Markonah","ownercard":"Istri"}';
$my_array = json_decode($string,true);
echo $my_array["status"]; // output: 2

Use php's "eval" function.

 eval("\$myarray = $str;");

I think you might want to look into serialize and unserialize.

$myArray = array('key1'=>'value1', 'key2'=>'value2');
$serialized = serialize($myArray);
$myNewArray = unserialize($serialized);
print_r($myNewArray); // Array ( [key1] => value1 [key2] => value2 ) 

As I noted in the comment to you, your example string is invalid. This example shows a valid string version of json. Use json_decode, with the 2nd parameter set to true to turn the embedded objects into array elements.

You will get an embedded array of arrays, but you can easily flatten that using the spread operator (...) with array_merge.

<?php
$string = '[{"006":"BASIC"},{"007":"ADV"}]';

$r = json_decode($string, true);
$r = array_merge(...$r);
print_r($r);

Outputs:

Array
(
    [006] => BASIC
    [007] => ADV
)

Use explode function

$array = explode(' ', $string);

The first argument is delimiter

You can do it like below:-

<?php

$string = "[14,16,18]";

$array = json_decode($string, true);
print_r($array);

Output:- https://eval.in/847737

Another solution:-

<?php

$string = "[14,16,18]";

$array = explode(',',str_replace(array('[',']'),array('',''),$string));

print_r($array);

Output:-https://eval.in/847734