10.3.5 304 Not Modified

If the client has performed a conditional GET request and access is
allowed, but the document has not been modified, the server SHOULD
respond with this status code. The 304 response MUST NOT contain a
message-body, and thus is always terminated by the first empty line
after the header fields.

The response MUST include the following header fields:

In coding often we have to check for ststus of any link and given site.We may need this in CURl or ajax mostely.We have following codes which indicate different ststus from server.

[Informational 1xx]
100="Continue"
101="Switching Protocols"

[Successful 2xx]
200="OK"
201="Created"
202="Accepted"
203="Non-Authoritative Information"
204="No Content"
205="Reset Content"
206="Partial Content"

[Redirection 3xx]
300="Multiple Choices"
301="Moved Permanently"
302="Found"
303="See Other"
304="Not Modified"
305="Use Proxy"
306="(Unused)"
307="Temporary Redirect"

Below is the code that was used for getting image from a remote location and saving that image to current folder.This code can be modified easily to achive something different.




<?php
/**
* @desc file: This source was used for copying images from another server to our own server and can be modified according to requirements.
*/
//***********************URL of image which you need**************
$img_url='http://www.inderweb.com/inderweb/userpictures/picture-1.jpg';
$ext_arr=explode("/",$img_url);