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<?php for ($i = 0; $i < 0x10ffff; $i++) { $chr = mb_chr($i); if (strlen($chr) !== strlen(mb_strtolower($chr)) || strlen($chr) !== strlen(mb_strtoupper($chr))) { var_dump($i); var_dump($chr); var_dump(mb_strtolower($chr)); var_dump(mb_strtoupper($chr)); break; } }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 41
Branch analysis from position: 41
2 jumps found. (Code = 44) Position 1 = 43, Position 2 = 2
Branch analysis from position: 43
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 2
2 jumps found. (Code = 47) Position 1 = 13, Position 2 = 20
Branch analysis from position: 13
2 jumps found. (Code = 43) Position 1 = 21, Position 2 = 40
Branch analysis from position: 21
1 jumps found. (Code = 42) Position 1 = 43
Branch analysis from position: 43
Branch analysis from position: 40
2 jumps found. (Code = 44) Position 1 = 43, Position 2 = 2
Branch analysis from position: 43
Branch analysis from position: 2
Branch analysis from position: 20
filename:       /in/5E9Um
function name:  (null)
number of ops:  44
compiled vars:  !0 = $i, !1 = $chr
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 0
          1      > JMP                                                      ->41
    4     2    >   INIT_FCALL                                               'mb_chr'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $3      
          5        ASSIGN                                                   !1, $3
    5     6        STRLEN                                           ~5      !1
          7        INIT_FCALL                                               'mb_strtolower'
          8        SEND_VAR                                                 !1
          9        DO_ICALL                                         $6      
         10        STRLEN                                           ~7      $6
         11        IS_NOT_IDENTICAL                                 ~8      ~5, ~7
         12      > JMPNZ_EX                                         ~8      ~8, ->20
         13    >   STRLEN                                           ~9      !1
         14        INIT_FCALL                                               'mb_strtoupper'
         15        SEND_VAR                                                 !1
         16        DO_ICALL                                         $10     
         17        STRLEN                                           ~11     $10
         18        IS_NOT_IDENTICAL                                 ~12     ~9, ~11
         19        BOOL                                             ~8      ~12
         20    > > JMPZ                                                     ~8, ->40
    6    21    >   INIT_FCALL                                               'var_dump'
         22        SEND_VAR                                                 !0
         23        DO_ICALL                                                 
    7    24        INIT_FCALL                                               'var_dump'
         25        SEND_VAR                                                 !1
         26        DO_ICALL                                                 
    8    27        INIT_FCALL                                               'var_dump'
         28        INIT_FCALL                                               'mb_strtolower'
         29        SEND_VAR                                                 !1
         30        DO_ICALL                                         $15     
         31        SEND_VAR                                                 $15
         32        DO_ICALL                                                 
    9    33        INIT_FCALL                                               'var_dump'
         34        INIT_FCALL                                               'mb_strtoupper'
         35        SEND_VAR                                                 !1
         36        DO_ICALL                                         $17     
         37        SEND_VAR                                                 $17
         38        DO_ICALL                                                 
   10    39      > JMP                                                      ->43
    3    40    >   PRE_INC                                                  !0
         41    >   IS_SMALLER                                               !0, 1114111
         42      > JMPNZ                                                    ~20, ->2
   12    43    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
143.77 ms | 1010 KiB | 17 Q