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Here is the output:
HTTP/1.1 200 OK
Server: Microsoft-IIS/5.1
Date: Sat, 19 Nov 2005 02:28:32 GMT
Content-Type: text/xml;charset=utf-8
X-Powered-By: PHP/5.0.4
Content-Length: 38
Version: 2005
Key-Word: PHP
Key-Word: HTTP
<html><body>Hello world!</body></html>
Okay. What can we say about the output?
- I was able to call header() after I started to output the entity body, because I had the output buffer turned on.
I entered "output_buffering = 4096" in php.ini.
- "Content-Type" defined ok.
- "Content-Length" defined ok. But it was outputted after "X-Powered-By". Not sure why.
- The "replace" flag worked. There is only one "Version", because by default replace is turned on.
There are two "Key-Word", because I set "replace" to "false" in my second header() call.
Forcing the Browser to Redirect
The document says we can use header("Location: ...") to tell the browser to make a new HTTP request to
a given URL. This is called "redirect". Here is my testing script, HttpRedirect.php:
<?php #HttpRedirect.php
# Copyright (c) 2005 by Dr. Herong Yang, http://www.herongyang.com/
#
$text = "<html><body>Moved!</body></html>";
print($text);
header("Content-Type: text/xml;charset=utf-8");
header("Content-Length: ".strlen($text));
header("Location: http://www.herongyang.com/");
?>
The output:
HTTP/1.1 302 Object Moved
Server: Microsoft-IIS/5.1
Date: Sat, 19 Nov 2005 03:46:58 GMT
Content-Type: text/html
X-Powered-By: PHP/5.0.4
Content-Length: 32
Location: http://www.herongyang.com/
<head><title>Document Moved</title></head>
<body><h1>Object Moved</h1>This document may be
found <a HREF="http://www.herongyang.com/">here</a></body>
I am a little bit surprised by the output:
- My entity body has been totally replaced by a short HTML document generated
by the PHP engine. This is not mentioned in the PHP documentation at all!
- The status line did change to "HTTP/1.1 302 Object Moved".
- The "Content-Length" still had my value, the number of bytes of my original HTML message,
not the replacing message.
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