Page 530 - Beginning PHP 5.3

Part III: Using PHP in Practice
Many response headers are similar, or identical, to their request header counterparts. Here are a few of
the more common response headers sent by Web servers:

Header Description Example
Date The date and time of the Date: Mon, 05 Jan 2009 10:07:20
response. GMT

Content The length (in bytes) of the Content - Length: 8704
-
Length content that follows.
Content - Type The MIME content type for the Content - Type: text/html
content that follows.
Location An alternative URL to the one Location: http://www.example.com/
requested. Commonly used newpage.php

with 301 and 302 status codes to
send the browser to a new URL.
Server Information about the Web Server: Apache/1.3.34 (Debian)
server, such as its type and PHP/5.2.0 - 8+etch13 mod_perl/1.29
version.
Set - Cookie Requests that an HTTP cookie Set - Cookie: name=Fred;
be stored in the browser. expires=Mon, 05 - Jan - 2009
10:22:21 GMT; path=/; domain=.
example.com

Here ’ s an example response from a Web server after a browser has requested an HTML page:
HTTP/1.x 200 OK
Date: Mon, 05 Jan 2009 10:19:52 GMT
Server: Apache/2.0.59 (Unix) PHP/5.2.5 DAV/2
X-Powered-By: PHP/5.2.5
Content-Length: 395
Keep-Alive: timeout=15, max=96
Connection: Keep-Alive
Content-Type: text/html

< !DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Strict//EN”
“http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd” >
< html xmlns=”http://www.w3.org/1999/xhtml” xml:lang=”en” lang=”en” >
< head >
< title > About Us < /title >
< link rel=”stylesheet” type=”text/css” href=”common.css” / >
< /head >
< body >
< h1 > About Us < /h1 >
< p > We specialize in widgets for all occasions. < /p >
< /body >
< /html >

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