Question

I have this string:

[{"position":"1d","number":10,"nb_plot1":12,"max_actions":3}
{"position":"2d","number":7,"nb_plot1":15,"max_actions":30}
{"position":"3d","number":100,"nb_plot1":2,"max_actions":5}]

and i need to obtain two different string with different format like this:

for numbers:

[10,7,100]

for positions:

['1d','2d','3d']

and cut unnecesarry strings.

I’m a noob sorry.

Answer 1

Decode the string in a array with json_decode.

Iterate over this array and build new arrays for numbers and position.

Encode the arrays.

In code:

$arr = json_decode($string);

$numbers = array();
$positions = array();

foreach($arr as $a) 
{
    $numbers[] = (int)$a->number;
    $positions[] = $a->position;
}

$number_string = json_encode($numbers);
$position_string = json_encode($positions);