Recording a JSON POST to File Using PHP

Question

I'm trying to record data that is being posted to my server to a text file. An example of the data that is being sent to my server is located here:

http://dev.datasift.com/docs/push/sample-output-file-based-connectors

It says on that page:

"For all file-based connectors, the payload is a JSON object containing metadata plus an array containing the JSON objects from your stream."

I have the following PHP at the location I have datasift sending data to:

<?php
$myFile = "testFile.txt";
$phpObj = json_decode($_POST['json']);
file_put_contents($myFile,$phpObj);
echo '{ "success": true }';
?>

I know data is being sent, but nothing is being recorded in my text file. It's just blank every time. I have no idea where to go from here unfortunately. Any ideas?

Answer 1

I think you want to get the raw content of the POST, This works for me with both POST and PUT:

$phpObj = json_decode(file_get_contents("php://input"));

$_POST contains the array from x-www-form-urlencoded content, not json.

Hope that points you in the right direction :)

Edit: @user4035 is right... your also trying to save a php object to a file... This is what i would do:

<?php
$jsonString = file_get_contents("php://input");
$myFile = "testFile.txt";
file_put_contents($myFile,$jsonString);
echo '{ "success": true }';
?>