From:             admin dot windows at gmail dot com
Operating system: Windows/Linux
PHP version:      5.3.15
Package:          Filter related
Bug Type:         Bug
Bug description:FILTER_SANITIZE_SPECIAL_CHARS does not work as declared

Description:
------------
FILTER_SANITIZE_SPECIAL_CHARS and FILTER_SANITIZE_FULL_SPECIAL_CHARS does
not work 
as documented and produced results does not match htmlspecialchars results
at all.



Test script:
---------------
$string = "<a href=\"#\">O'Reilly - PHP Tips & Tricks</a>";

//string '<a href="#">O'Reilly - PHP Tips & Tricks</a>' (length=44)
var_dump($string);


//string '&lt;a href=&quot;#&quot;&gt;O&#039;Reilly - PHP Tips &amp;
Tricks&lt;/a&gt;' (length=75)
var_dump(htmlspecialchars($string, ENT_QUOTES));

//string '&#60;a href=&#34;#&#34;&#62;O&#39;Reilly - PHP Tips &#38;
Tricks&#60;/a&#62;' (length=76)
var_dump(filter_var($string, FILTER_SANITIZE_SPECIAL_CHARS));

//string '&#60;a href=&#34;#&#34;&#62;O&#39;Reilly - PHP Tips &#38;
Tricks&#60;/a&#62;' (length=76)
var_dump(filter_var($string, FILTER_SANITIZE_FULL_SPECIAL_CHARS));

Expected result:
----------------
//string '&lt;a href=&quot;#&quot;&gt;O&#039;Reilly - PHP Tips &amp; 
Tricks&lt;/a&gt;' (length=75)

Actual result:
--------------
//string '&#60;a href=&#34;#&#34;&#62;O&#39;Reilly - PHP Tips &#38; 
Tricks&#60;/a&#62;' (length=76)

-- 
Edit bug report at https://bugs.php.net/bug.php?id=62683&edit=1
-- 
Try a snapshot (PHP 5.4):            
https://bugs.php.net/fix.php?id=62683&r=trysnapshot54
Try a snapshot (PHP 5.3):            
https://bugs.php.net/fix.php?id=62683&r=trysnapshot53
Try a snapshot (trunk):              
https://bugs.php.net/fix.php?id=62683&r=trysnapshottrunk
Fixed in SVN:                        
https://bugs.php.net/fix.php?id=62683&r=fixed
Fixed in SVN and need be documented: 
https://bugs.php.net/fix.php?id=62683&r=needdocs
Fixed in release:                    
https://bugs.php.net/fix.php?id=62683&r=alreadyfixed
Need backtrace:                      
https://bugs.php.net/fix.php?id=62683&r=needtrace
Need Reproduce Script:               
https://bugs.php.net/fix.php?id=62683&r=needscript
Try newer version:                   
https://bugs.php.net/fix.php?id=62683&r=oldversion
Not developer issue:                 
https://bugs.php.net/fix.php?id=62683&r=support
Expected behavior:                   
https://bugs.php.net/fix.php?id=62683&r=notwrong
Not enough info:                     
https://bugs.php.net/fix.php?id=62683&r=notenoughinfo
Submitted twice:                     
https://bugs.php.net/fix.php?id=62683&r=submittedtwice
register_globals:                    
https://bugs.php.net/fix.php?id=62683&r=globals
PHP 4 support discontinued:          
https://bugs.php.net/fix.php?id=62683&r=php4
Daylight Savings:                    https://bugs.php.net/fix.php?id=62683&r=dst
IIS Stability:                       
https://bugs.php.net/fix.php?id=62683&r=isapi
Install GNU Sed:                     
https://bugs.php.net/fix.php?id=62683&r=gnused
Floating point limitations:          
https://bugs.php.net/fix.php?id=62683&r=float
No Zend Extensions:                  
https://bugs.php.net/fix.php?id=62683&r=nozend
MySQL Configuration Error:           
https://bugs.php.net/fix.php?id=62683&r=mysqlcfg

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