Ajax post json data handle in php

Php return json data to ajax

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

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

Ajax post json data handle in php

// sent json data by post method or others
// {"id":"2"}

header('Content-Type: application/json'); 
// retrieve json data from post 
$json = file_get_contents('php://input'); // return {"id":"2"}
$data = json_encode($json); // return a stdClass object| $data->id
echo $data->id;

Php json response to ajax

<?php
 echo json_encode($data);
?>

Source: webslesson.info

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