how to iterate over non-English file names in PHP

by

This is not possible. It’s a limitation of PHP. PHP uses the multibyte versions of Windows APIs; you’re limited to the characters your codepage can represent.

See this answer.

Directory contents:

D:\Users\Cataphract\Desktop\teste2>dir
 Volume in drive D is GRANDEDISCO
 Volume Serial Number is 945F-DB89

 Directory of D:\Users\Cataphract\Desktop\teste2

01-06-2010  17:16              .
01-06-2010  17:16              ..
01-06-2010  17:15                 0 coptic small letter shima follows ϭ.txt
01-06-2010  17:18                86 teste.php
               2 File(s)             86 bytes
               2 Dir(s)  12.178.505.728 bytes free

Test file contents:

<?php
exec('pause');
foreach (new DirectoryIterator(".") as $v) {
    echo $v."\n";
}

Test file results:

.
..
coptic small letter shima follows ?.txt
teste.php

Debugger output:

Call stack (PHP 5.3.0):

>   php5ts_debug.dll!readdir_r(DIR * dp=0x02f94068, dirent * entry=0x00a7e7cc, dirent * * result=0x00a7e7c0)  Line 80   C
    php5ts_debug.dll!php_plain_files_dirstream_read(_php_stream * stream=0x02b94280, char * buf=0x02b9437c, unsigned int count=260, void * * * tsrm_ls=0x028a15c0)  Line 820 + 0x17 bytes   C
    php5ts_debug.dll!_php_stream_read(_php_stream * stream=0x02b94280, char * buf=0x02b9437c, unsigned int size=260, void * * * tsrm_ls=0x028a15c0)  Line 603 + 0x1c bytes  C
    php5ts_debug.dll!_php_stream_readdir(_php_stream * dirstream=0x02b94280, _php_stream_dirent * ent=0x02b9437c, void * * * tsrm_ls=0x028a15c0)  Line 1806 + 0x16 bytes    C
    php5ts_debug.dll!spl_filesystem_dir_read(_spl_filesystem_object * intern=0x02b94340, void * * * tsrm_ls=0x028a15c0)  Line 199 + 0x20 bytes  C
    php5ts_debug.dll!spl_filesystem_dir_open(_spl_filesystem_object * intern=0x02b94340, char * path=0x02b957f0, void * * * tsrm_ls=0x028a15c0)  Line 238 + 0xd bytes   C
    php5ts_debug.dll!spl_filesystem_object_construct(int ht=1, _zval_struct * return_value=0x02b91f88, _zval_struct * * return_value_ptr=0x00000000, _zval_struct * this_ptr=0x02b92028, int return_value_used=0, void * * * tsrm_ls=0x028a15c0, long ctor_flags=0)  Line 645 + 0x11 bytes  C
    php5ts_debug.dll!zim_spl_DirectoryIterator___construct(int ht=1, _zval_struct * return_value=0x02b91f88, _zval_struct * * return_value_ptr=0x00000000, _zval_struct * this_ptr=0x02b92028, int return_value_used=0, void * * * tsrm_ls=0x028a15c0)  Line 658 + 0x1f bytes   C
    php5ts_debug.dll!zend_do_fcall_common_helper_SPEC(_zend_execute_data * execute_data=0x02bc0098, void * * * tsrm_ls=0x028a15c0)  Line 313 + 0x78 bytes   C
    php5ts_debug.dll!ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER(_zend_execute_data * execute_data=0x02bc0098, void * * * tsrm_ls=0x028a15c0)  Line 423  C
    php5ts_debug.dll!execute(_zend_op_array * op_array=0x02b93888, void * * * tsrm_ls=0x028a15c0)  Line 104 + 0x11 bytes    C
    php5ts_debug.dll!zend_execute_scripts(int type=8, void * * * tsrm_ls=0x028a15c0, _zval_struct * * retval=0x00000000, int file_count=3, ...)  Line 1188 + 0x21 bytes C
    php5ts_debug.dll!php_execute_script(_zend_file_handle * primary_file=0x00a7fad4, void * * * tsrm_ls=0x028a15c0)  Line 2196 + 0x1b bytes C
    php.exe!main(int argc=2, char * * argv=0x028a14c0)  Line 1188 + 0x13 bytes  C
    php.exe!__tmainCRTStartup()  Line 555 + 0x19 bytes  C
    php.exe!mainCRTStartup()  Line 371  C

Is it really a question mark?

dp->fileinfo
{dwFileAttributes=32 ftCreationTime={...} ftLastAccessTime={...} ...}
    dwFileAttributes: 32
    ftCreationTime: {dwLowDateTime=2784934701 dwHighDateTime=30081445 }
    ftLastAccessTime: {dwLowDateTime=2784934701 dwHighDateTime=30081445 }
    ftLastWriteTime: {dwLowDateTime=2784934701 dwHighDateTime=30081445 }
    nFileSizeHigh: 0
    nFileSizeLow: 0
    dwReserved0: 3435973836
    dwReserved1: 3435973836
    cFileName: 0x02f9409c "coptic small letter shima follows ?.txt"
    cAlternateFileName: 0x02f941a0 "COPTIC~1.TXT"
dp->fileinfo.cFileName[34]
63 '?'

Yes! It’s character #63.

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