array_agg php to array
// Postgresql arrays look like this: {1,2,3,4} $x = '{1,2,3,4}'; $y = json_decode('[' . substr($x, 1, -1) . ']'); // [1, 2, 3, 4] // To cast back the other way would be mirror opposite: $y = [1, 2, 3, 4]; $x = '{' . substr(json_encode($y), 1, -1) . '}';