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<?php mb_regex_encoding('SJIS'); $string = "my number is 63735"; $pattern = "63735"; $replacement = mb_convert_encoding(pack('n', "63735"), "SJIS", "ASCII"); var_dump(bin2hex($replacement)); //expected result: my number is �� //OK $new_string = mb_ereg_replace($pattern, $replacement, $string); //expected result: my new number is �� //but it returns NULL. $ret = mb_ereg_replace("number", "new number", $new_string); var_dump($ret); var_dump(mb_convert_encoding($ret, "UTF-8", "SJIS"));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ofV7G
function name:  (null)
number of ops:  45
compiled vars:  !0 = $string, !1 = $pattern, !2 = $replacement, !3 = $new_string, !4 = $ret
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                                   'mb_regex_encoding'
          1        SEND_VAL                                                     'SJIS'
          2        DO_ICALL                                                     
    3     3        ASSIGN                                                       !0, 'my+number+is+63735'
    4     4        ASSIGN                                                       !1, '63735'
    5     5        INIT_FCALL                                                   'mb_convert_encoding'
          6        INIT_FCALL                                                   'pack'
          7        SEND_VAL                                                     'n'
          8        SEND_VAL                                                     '63735'
          9        DO_ICALL                                             $8      
         10        SEND_VAR                                                     $8
         11        SEND_VAL                                                     'SJIS'
         12        SEND_VAL                                                     'ASCII'
         13        DO_ICALL                                             $9      
         14        ASSIGN                                                       !2, $9
    7    15        INIT_FCALL                                                   'var_dump'
         16        INIT_FCALL                                                   'bin2hex'
         17        SEND_VAR                                                     !2
         18        DO_ICALL                                             $11     
         19        SEND_VAR                                                     $11
         20        DO_ICALL                                                     
   11    21        INIT_FCALL                                                   'mb_ereg_replace'
         22        SEND_VAR                                                     !1
         23        SEND_VAR                                                     !2
         24        SEND_VAR                                                     !0
         25        DO_ICALL                                             $13     
         26        ASSIGN                                                       !3, $13
   15    27        INIT_FCALL                                                   'mb_ereg_replace'
         28        SEND_VAL                                                     'number'
         29        SEND_VAL                                                     'new+number'
         30        SEND_VAR                                                     !3
         31        DO_ICALL                                             $15     
         32        ASSIGN                                                       !4, $15
   16    33        INIT_FCALL                                                   'var_dump'
         34        SEND_VAR                                                     !4
         35        DO_ICALL                                                     
   17    36        INIT_FCALL                                                   'var_dump'
         37        INIT_FCALL                                                   'mb_convert_encoding'
         38        SEND_VAR                                                     !4
         39        SEND_VAL                                                     'UTF-8'
         40        SEND_VAL                                                     'SJIS'
         41        DO_ICALL                                             $18     
         42        SEND_VAR                                                     $18
         43        DO_ICALL                                                     
         44      > RETURN                                                       1

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