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<?php $string = '🇷🇴'; echo '=== UTF-8 =============================', PHP_EOL; echo 'STRING: ', $string, PHP_EOL; echo 'CHARACTERS: ', mb_strlen($string), PHP_EOL; // 2 echo 'BYTE COUNT: ', mb_strlen($string, '8bit'), PHP_EOL; // 8 foreach(range(0, mb_strlen($string) - 1) as $index) { echo PHP_EOL; echo 'CHARACTER #', $index + 1, ' CODE POINT: ', '0x', dechex(mb_ord(mb_substr($string, $index, 1))), PHP_EOL; // [0x1f1f7, 0x1f1f4] echo 'CHARACTER #', $index + 1, ' BYTE COUNT: ', mb_strlen(mb_substr($string, $index, 1), '8bit'), PHP_EOL; // [4, 4] } echo '=======================================', PHP_EOL, PHP_EOL; $string = mb_convert_encoding($string, 'UTF-16', 'UTF-8'); echo '=== UTF-16 ============================', PHP_EOL; echo 'STRING: ', $string, PHP_EOL; echo 'CHARACTERS: ', mb_strlen($string), PHP_EOL; // should be 2, is 4 echo 'BYTE COUNT: ', strlen($string), PHP_EOL; // should be 8, is 8 foreach(range(0, mb_strlen($string) - 1) as $index) { echo PHP_EOL; echo 'CHARACTER #', $index + 1, ' CODE POINT: ', '0x', dechex(mb_ord(mb_substr($string, $index, 1))), PHP_EOL; // should be [0x1f1f7, 0x1f1f4], is [0x0, 0x0, 0x0, 0x0] echo 'CHARACTER #', $index + 1, ' BYTE COUNT: ', mb_strlen(mb_substr($string, $index, 1), '8bit'), PHP_EOL; // should be [4, 4], is [2, 2, 2, 2] } echo '=======================================', PHP_EOL;
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 28, Position 2 = 64
Branch analysis from position: 28
2 jumps found. (Code = 78) Position 1 = 29, Position 2 = 64
Branch analysis from position: 29
1 jumps found. (Code = 42) Position 1 = 28
Branch analysis from position: 28
Branch analysis from position: 64
2 jumps found. (Code = 77) Position 1 = 98, Position 2 = 134
Branch analysis from position: 98
2 jumps found. (Code = 78) Position 1 = 99, Position 2 = 134
Branch analysis from position: 99
1 jumps found. (Code = 42) Position 1 = 98
Branch analysis from position: 98
Branch analysis from position: 134
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 134
Branch analysis from position: 64
filename:       /in/DrEcL
function name:  (null)
number of ops:  138
compiled vars:  !0 = $string, !1 = $index
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%F0%9F%87%B7%F0%9F%87%B4'
    5     1        ECHO                                                     '%3D%3D%3D+UTF-8+%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D'
          2        ECHO                                                     '%0A'
    6     3        ECHO                                                     'STRING%3A+'
          4        ECHO                                                     !0
          5        ECHO                                                     '%0A'
    7     6        ECHO                                                     'CHARACTERS%3A+'
          7        INIT_FCALL                                               'mb_strlen'
          8        SEND_VAR                                                 !0
          9        DO_ICALL                                         $3      
         10        ECHO                                                     $3
         11        ECHO                                                     '%0A'
    8    12        ECHO                                                     'BYTE+COUNT%3A+'
         13        INIT_FCALL                                               'mb_strlen'
         14        SEND_VAR                                                 !0
         15        SEND_VAL                                                 '8bit'
         16        DO_ICALL                                         $4      
         17        ECHO                                                     $4
         18        ECHO                                                     '%0A'
   10    19        INIT_FCALL                                               'range'
         20        SEND_VAL                                                 0
         21        INIT_FCALL                                               'mb_strlen'
         22        SEND_VAR                                                 !0
         23        DO_ICALL                                         $5      
         24        SUB                                              ~6      $5, 1
         25        SEND_VAL                                                 ~6
         26        DO_ICALL                                         $7      
         27      > FE_RESET_R                                       $8      $7, ->64
         28    > > FE_FETCH_R                                               $8, !1, ->64
   11    29    >   ECHO                                                     '%0A'
   12    30        ECHO                                                     'CHARACTER+%23'
         31        ADD                                              ~9      !1, 1
         32        ECHO                                                     ~9
         33        ECHO                                                     '+CODE+POINT%3A+'
         34        ECHO                                                     '0x'
         35        INIT_FCALL                                               'dechex'
         36        INIT_FCALL                                               'mb_ord'
         37        INIT_FCALL                                               'mb_substr'
         38        SEND_VAR                                                 !0
         39        SEND_VAR                                                 !1
         40        SEND_VAL                                                 1
         41        DO_ICALL                                         $10     
         42        SEND_VAR                                                 $10
         43        DO_ICALL                                         $11     
         44        SEND_VAR                                                 $11
         45        DO_ICALL                                         $12     
         46        ECHO                                                     $12
         47        ECHO                                                     '%0A'
   13    48        ECHO                                                     'CHARACTER+%23'
         49        ADD                                              ~13     !1, 1
         50        ECHO                                                     ~13
         51        ECHO                                                     '+BYTE+COUNT%3A+'
         52        INIT_FCALL                                               'mb_strlen'
         53        INIT_FCALL                                               'mb_substr'
         54        SEND_VAR                                                 !0
         55        SEND_VAR                                                 !1
         56        SEND_VAL                                                 1
         57        DO_ICALL                                         $14     
         58        SEND_VAR                                                 $14
         59        SEND_VAL                                                 '8bit'
         60        DO_ICALL                                         $15     
         61        ECHO                                                     $15
         62        ECHO                                                     '%0A'
   10    63      > JMP                                                      ->28
         64    >   FE_FREE                                                  $8
   15    65        ECHO                                                     '%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D'
         66        ECHO                                                     '%0A'
         67        ECHO                                                     '%0A'
   17    68        INIT_FCALL                                               'mb_convert_encoding'
         69        SEND_VAR                                                 !0
         70        SEND_VAL                                                 'UTF-16'
         71        SEND_VAL                                                 'UTF-8'
         72        DO_ICALL                                         $16     
         73        ASSIGN                                                   !0, $16
   19    74        ECHO                                                     '%3D%3D%3D+UTF-16+%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D'
         75        ECHO                                                     '%0A'
   20    76        ECHO                                                     'STRING%3A+'
         77        ECHO                                                     !0
         78        ECHO                                                     '%0A'
   21    79        ECHO                                                     'CHARACTERS%3A+'
         80        INIT_FCALL                                               'mb_strlen'
         81        SEND_VAR                                                 !0
         82        DO_ICALL                                         $18     
         83        ECHO                                                     $18
         84        ECHO                                                     '%0A'
   22    85        ECHO                                                     'BYTE+COUNT%3A+'
         86        STRLEN                                           ~19     !0
         87        ECHO                                                     ~19
         88        ECHO                                                     '%0A'
   24    89        INIT_FCALL                                               'range'
         90        SEND_VAL                                                 0
         91        INIT_FCALL                                               'mb_strlen'
         92        SEND_VAR                                                 !0
         93        DO_ICALL                                         $20     
         94        SUB                                              ~21     $20, 1
         95        SEND_VAL                                                 ~21
         96        DO_ICALL                                         $22     
         97      > FE_RESET_R                                       $23     $22, ->134
         98    > > FE_FETCH_R                                               $23, !1, ->134
   25    99    >   ECHO                                                     '%0A'
   26   100        ECHO                                                     'CHARACTER+%23'
        101        ADD                                              ~24     !1, 1
        102        ECHO                                                     ~24
        103        ECHO                                                     '+CODE+POINT%3A+'
        104        ECHO                                                     '0x'
        105        INIT_FCALL                                               'dechex'
        106        INIT_FCALL                                               'mb_ord'
        107        INIT_FCALL                                               'mb_substr'
        108        SEND_VAR                                                 !0
        109        SEND_VAR                                                 !1
        110        SEND_VAL                                                 1
        111        DO_ICALL                                         $25     
        112        SEND_VAR                                                 $25
        113        DO_ICALL                                         $26     
        114        SEND_VAR                                                 $26
        115        DO_ICALL                                         $27     
        116        ECHO                                                     $27
        117        ECHO                                                     '%0A'
   27   118        ECHO                                                     'CHARACTER+%23'
        119        ADD                                              ~28     !1, 1
        120        ECHO                                                     ~28
        121        ECHO                                                     '+BYTE+COUNT%3A+'
        122        INIT_FCALL                                               'mb_strlen'
        123        INIT_FCALL                                               'mb_substr'
        124        SEND_VAR                                                 !0
        125        SEND_VAR                                                 !1
        126        SEND_VAL                                                 1
        127        DO_ICALL                                         $29     
        128        SEND_VAR                                                 $29
        129        SEND_VAL                                                 '8bit'
        130        DO_ICALL                                         $30     
        131        ECHO                                                     $30
        132        ECHO                                                     '%0A'
   24   133      > JMP                                                      ->98
        134    >   FE_FREE                                                  $23
   29   135        ECHO                                                     '%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D%3D'
        136        ECHO                                                     '%0A'
   30   137      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
179.84 ms | 1408 KiB | 25 Q