ASP Response.Expires to PHP ?

[donishere]

What is the PHP equivalent to ASP's "Response.Expires = -1" in regards to caching? I want a PHP file to never be cached.

Trying to force a sample AJAX file to update its response on each keypress in a form field.

thanks

 

[jpadie]

you use the http headers to control the browser's behaviour. you can use php to set the http headers using the header() command.

the php manual recommends this

header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); // Date in the past