#50267 [NEW]: get_browser with null parameter runs on empty user agent string

From: Date: Mon, 23 Nov 2009 05:18:20 +0000
Subject: #50267 [NEW]: get_browser with null parameter runs on empty user agent string
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-144941@lists.php.net to get a copy of this message 
From:             nachumk at gmail dot com
Operating system: Windows XP 32 bit
PHP version:      5.3.1
PHP Bug Type:     Unknown/Other Function
Bug description:  get_browser with null parameter runs on empty user agent string

Description:
------------
get_browser should work with null string and doesn't when using 5.3.1. 
5.2.11 works fine.

Reproduce code:
---------------
<?php
phpinfo();
echo "User Agent: " . $_SERVER['HTTP_USER_AGENT'] . "<br>";
echo 'print_r(get_browser($_SERVER[\'HTTP_USER_AGENT\'], true));<br>';
print_r(get_browser($_SERVER['HTTP_USER_AGENT'], true));
echo '<br>print_r(get_browser(null, true))<br>';
print_r(get_browser(null, true));
?>


Expected result:
----------------
That both get_browser calls should produce identical results.

Actual result:
--------------
The first call with $_SERVER['HTTP_USER_AGENT'] returns proper results 
and the call with null returns a default response (same as what it would 
return with a completely empty user agent string).

-- 
Edit bug report at http://bugs.php.net/?id=50267&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=50267&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=50267&r=trysnapshot53
Try a snapshot (PHP 6.0):            http://bugs.php.net/fix.php?id=50267&r=trysnapshot60
Fixed in SVN:                        http://bugs.php.net/fix.php?id=50267&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=50267&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=50267&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=50267&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=50267&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=50267&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=50267&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=50267&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=50267&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=50267&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=50267&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=50267&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=50267&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=50267&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=50267&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=50267&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=50267&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=50267&r=mysqlcfg

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