json header does not work - php

Question

i have a webservice and a web interface for registered user. this section allow the user to get their statistics (similar to stack overflow)

• number of views
• number of answers
• number of post
• number of support ticket etc...

now this tool i have allow the user to retreive their data in a json format, my problem is the header sent is not working for all the browsers

i have:

header('Cache-Control: no-cache, must-revalidate');
header('Expires: Mon, 26 Jul 1997 00:00:00 GMT');
header('Content-type: text/json');

should i remove the expires and cache control?

Answer 1

The commonly accepted MIME for json is application/json.

Answer 2

You should use:

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

See also: What is the correct JSON content type?