how to extract json data in php code example

Example 1: php return json

header('Content-type: application/json');
echo json_encode($array);

Example 2: php return json data

header('Content-Type: application/json'); 

$colors = array("red","blue","green");
echo json_encode($colors);

Example 3: how to get data from json array in php

$data = json_decode($json);