From:             laruence
Operating system: 
PHP version:      5.3.8
Package:          mbstring related
Bug Type:         Bug
Bug description:Wrong codes of mb_detect_encoding

Description:
------------
using Z_STRVAL_P before make sure it is IS_STRING:

see http://lxr.php.net/opengrok/xref/PHP_5_4/ext/mbstring/mbstring.c#3186

if (ZEND_NUM_ARGS() >= 2 && Z_STRVAL_P(encoding_list)) {
                switch (Z_TYPE_P(encoding_list)) {
                case IS_ARRAY:
                        if (FAILURE == 
php_mb_parse_encoding_array(encoding_list, &list, &size, 0 TSRMLS_CC)) {
                                if (list) {
                                        efree(list);
                                        list = NULL;
                                        size = 0;
                                }
                        }
                        break;
                default:
                        convert_to_string(encoding_list);
                        if (FAILURE == 
php_mb_parse_encoding_list(Z_STRVAL_P(encoding_list),
Z_STRLEN_P(encoding_list), 
&list, &size, 0 TSRMLS_CC)) {
                                if (list) {
                                        efree(list);
                                        list = NULL;
                                        size = 0;
                                }
                        }
                        break;
                }
                if (size <= 0) {
                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Illegal 
argument");
                }
        }

Test script:
---------------
none

Expected result:
----------------
none

Actual result:
--------------
none

-- 
Edit bug report at https://bugs.php.net/bug.php?id=55817&edit=1
-- 
Try a snapshot (PHP 5.4):            
https://bugs.php.net/fix.php?id=55817&r=trysnapshot54
Try a snapshot (PHP 5.3):            
https://bugs.php.net/fix.php?id=55817&r=trysnapshot53
Try a snapshot (trunk):              
https://bugs.php.net/fix.php?id=55817&r=trysnapshottrunk
Fixed in SVN:                        
https://bugs.php.net/fix.php?id=55817&r=fixed
Fixed in SVN and need be documented: 
https://bugs.php.net/fix.php?id=55817&r=needdocs
Fixed in release:                    
https://bugs.php.net/fix.php?id=55817&r=alreadyfixed
Need backtrace:                      
https://bugs.php.net/fix.php?id=55817&r=needtrace
Need Reproduce Script:               
https://bugs.php.net/fix.php?id=55817&r=needscript
Try newer version:                   
https://bugs.php.net/fix.php?id=55817&r=oldversion
Not developer issue:                 
https://bugs.php.net/fix.php?id=55817&r=support
Expected behavior:                   
https://bugs.php.net/fix.php?id=55817&r=notwrong
Not enough info:                     
https://bugs.php.net/fix.php?id=55817&r=notenoughinfo
Submitted twice:                     
https://bugs.php.net/fix.php?id=55817&r=submittedtwice
register_globals:                    
https://bugs.php.net/fix.php?id=55817&r=globals
PHP 4 support discontinued:          
https://bugs.php.net/fix.php?id=55817&r=php4
Daylight Savings:                    https://bugs.php.net/fix.php?id=55817&r=dst
IIS Stability:                       
https://bugs.php.net/fix.php?id=55817&r=isapi
Install GNU Sed:                     
https://bugs.php.net/fix.php?id=55817&r=gnused
Floating point limitations:          
https://bugs.php.net/fix.php?id=55817&r=float
No Zend Extensions:                  
https://bugs.php.net/fix.php?id=55817&r=nozend
MySQL Configuration Error:           
https://bugs.php.net/fix.php?id=55817&r=mysqlcfg

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