json - file_get_contents('php://input') always returns an empty string

Question

I'm building a PHP RESTful API, following this tutorial. The following function, which should return the data sent with the request when the 'put' method is used, returns null every time:

file_get_contents('php://input').

I've even downloaded and tested the full code example in the tutorial and it still returns null.

I'm using cURL and the following command in order to test the 'put' method:

curl -i -X PUT -d '{"address":"Sunset Boulevard"}' http://localhost/clients/ryan.

I've wasted days on this and still haven't gotten it to read the json data. What am I doing wrong?

Answer 1

As noted elsewhere on the web, php://input content does not get through if request is redirected. Maybe your web server has a redirect from an URL starting with www to an URL without www, or from URLs using HTTP to URLs using HTTPS. Check your web server logs to verify this, and act accordingly to avoid the redirection when making calls to the web service.