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Bug #39095 'max_redirects' context options doesn't work when value is 1
Submitted: 2006-10-09 14:05 UTC Modified: 2006-10-10 08:10 UTC
From: shen dot shenstone at gmail dot com Assigned:
Status: Not a bug Package: Streams related
PHP Version: 5.1.6 OS: Windows XP Pro SP2
Private report: No CVE-ID: None
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 [2006-10-09 14:05 UTC] shen dot shenstone at gmail dot com
Description:
------------
I resubmit this issus because when i add comment to old post, it always return that "Please do not SPAM our bug system."

Three Scripts for Test
======================
re1.php
-------
<?php
header('Location: re2.php');
?>

re2.php
-------
<?php
header('Location: re3.php');
?>

re3.php
-------
<?php
echo 'reached.';
?>

TEST SCRIPT
===========
<?php
	$dlp = "http://localhost:8080/re1.php";

	$opts = array(
		'http' => array(
		'max_redirects' => 1,
			'method' => "GET",
			'header' =>	"Accept: */*\r\n" .
						"Accept-Language: en-us\r\n" .
						"Accept-Encoding: gzip, deflate\r\n" .
						"User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; .NET CLR 1.1.4322)\r\n" .
						"Connection: Close\r\n"

		)
	);

	$context = stream_context_create($opts);
	$fp = fopen($dlp, 'r', false, $context);
	$meta_data = stream_get_meta_data($fp);

	var_dump($fp);
	var_dump($meta_data);
?>

RESULT(Copy & Paste from Windows Console)
=========================================
1. max_redirects = 1
--------------------
PHP Warning:  fopen(): Redirection limit reached, aborting. in D:\webroot\test.p
hp on line 18

Warning: fopen(): Redirection limit reached, aborting. in D:\webroot\test.php on
 line 18
PHP Warning:  fopen(http://localhost:8080/re1.php): failed to open stream: No er
ror in D:\webroot\test.php on line 18

Warning: fopen(http://localhost:8080/re1.php): failed to open stream: No error i
n D:\webroot\test.php on line 18
PHP Warning:  stream_get_meta_data(): supplied argument is not a valid stream re
source in D:\webroot\test.php on line 19

Warning: stream_get_meta_data(): supplied argument is not a valid stream resourc
e in D:\webroot\test.php on line 19
bool(false)
bool(false)

2. max_redirects = 2
--------------------
PHP Warning:  fopen(): Redirection limit reached, aborting. in D:\webroot\test.p
hp on line 18

Warning: fopen(): Redirection limit reached, aborting. in D:\webroot\test.php on
 line 18
PHP Warning:  fopen(http://localhost:8080/re1.php): failed to open stream: No er
ror in D:\webroot\test.php on line 18

Warning: fopen(http://localhost:8080/re1.php): failed to open stream: No error i
n D:\webroot\test.php on line 18
PHP Warning:  stream_get_meta_data(): supplied argument is not a valid stream re
source in D:\webroot\test.php on line 19

Warning: stream_get_meta_data(): supplied argument is not a valid stream resourc
e in D:\webroot\test.php on line 19
bool(false)
bool(false)

3. max_redirects = 3
--------------------
resource(7) of type (stream)
array(10) {
  ["wrapper_data"]=>
  array(23) {
    [0]=>
    string(18) "HTTP/1.1 302 Found"
    [1]=>
    string(35) "Date: Mon, 09 Oct 2006 13:37:38 GMT"
    [2]=>
    string(14) "Server: Apache"
    [3]=>
    string(53) "Set-Cookie: ZDEDebuggerPresent=php,phtml,php3; path=/"
    [4]=>
    string(17) "Location: re2.php"
    [5]=>
    string(17) "Content-Length: 0"
    [6]=>
    string(17) "Connection: close"
    [7]=>
    string(39) "Content-Type: text/html; charset=GB2312"
    [8]=>
    string(18) "HTTP/1.1 302 Found"
    [9]=>
    string(35) "Date: Mon, 09 Oct 2006 13:37:38 GMT"
    [10]=>
    string(14) "Server: Apache"
    [11]=>
    string(53) "Set-Cookie: ZDEDebuggerPresent=php,phtml,php3; path=/"
    [12]=>
    string(17) "Location: re3.php"
    [13]=>
    string(17) "Content-Length: 0"
    [14]=>
    string(17) "Connection: close"
    [15]=>
    string(39) "Content-Type: text/html; charset=GB2312"
    [16]=>
    string(15) "HTTP/1.1 200 OK"
    [17]=>
    string(35) "Date: Mon, 09 Oct 2006 13:37:38 GMT"
    [18]=>
    string(14) "Server: Apache"
    [19]=>
    string(53) "Set-Cookie: ZDEDebuggerPresent=php,phtml,php3; path=/"
    [20]=>
    string(17) "Content-Length: 8"
    [21]=>
    string(17) "Connection: close"
    [22]=>
    string(39) "Content-Type: text/html; charset=GB2312"
  }
  ["wrapper_type"]=>
  string(4) "http"
  ["stream_type"]=>
  string(10) "tcp_socket"
  ["mode"]=>
  string(2) "r+"
  ["unread_bytes"]=>
  int(8)
  ["seekable"]=>
  bool(false)
  ["uri"]=>
  string(29) "http://localhost:8080/re1.php"
  ["timed_out"]=>
  bool(false)
  ["blocked"]=>
  bool(true)
  ["eof"]=>
  bool(false)
}


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 [2006-10-09 14:13 UTC] shen dot shenstone at gmail dot com
From PHP Document, "max_redirects: The max number of redirects to follow. Value 1 or less means that no redirects are followed. Added in PHP 5.1.0."

so i understand it as that if i set max_redirects to 1, it do not follow the redirect("Locatoin:" in header) and return that header.
 [2006-10-09 16:14 UTC] tony2001@php.net
If you want to get the header itself you can use fsockopen().

 
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