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<?php $strings = [ 'A number at the end 1357', '2368 Letters and spaces 8675309', ]; foreach ($strings as $string) { var_export([ 'strcspn' => strcspn($string, 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ '), //reduces to 'a..zA..Z ' 'strspn' => strspn($string, 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ '), //reduces to 'a..zA..Z ' 'strpbrk' => strpbrk($string, 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ '), //reduces to 'a..zA..Z ' 'strtok' => strtok($string, 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ '), //reduces to 'a..zA..Z ' 'strtok2' => strtok('abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ '), //reduces to 'a..zA..Z ' ]); echo "\n--\n"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 2, Position 2 = 32
Branch analysis from position: 2
2 jumps found. (Code = 78) Position 1 = 3, Position 2 = 32
Branch analysis from position: 3
1 jumps found. (Code = 42) Position 1 = 2
Branch analysis from position: 2
Branch analysis from position: 32
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 32
filename:       /in/2Y0q4
function name:  (null)
number of ops:  34
compiled vars:  !0 = $strings, !1 = $string
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    8     1      > FE_RESET_R                                       $3      !0, ->32
          2    > > FE_FETCH_R                                               $3, !1, ->32
    9     3    >   INIT_FCALL                                               'var_export'
   10     4        INIT_FCALL                                               'strcspn'
          5        SEND_VAR                                                 !1
          6        SEND_VAL                                                 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ+'
          7        DO_ICALL                                         $4      
          8        INIT_ARRAY                                       ~5      $4, 'strcspn'
   11     9        INIT_FCALL                                               'strspn'
         10        SEND_VAR                                                 !1
         11        SEND_VAL                                                 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ+'
         12        DO_ICALL                                         $6      
         13        ADD_ARRAY_ELEMENT                                ~5      $6, 'strspn'
   12    14        INIT_FCALL                                               'strpbrk'
         15        SEND_VAR                                                 !1
         16        SEND_VAL                                                 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ+'
         17        DO_ICALL                                         $7      
         18        ADD_ARRAY_ELEMENT                                ~5      $7, 'strpbrk'
   13    19        INIT_FCALL                                               'strtok'
         20        SEND_VAR                                                 !1
         21        SEND_VAL                                                 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ+'
         22        DO_ICALL                                         $8      
         23        ADD_ARRAY_ELEMENT                                ~5      $8, 'strtok'
   14    24        INIT_FCALL                                               'strtok'
         25        SEND_VAL                                                 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ+'
         26        DO_ICALL                                         $9      
         27        ADD_ARRAY_ELEMENT                                ~5      $9, 'strtok2'
         28        SEND_VAL                                                 ~5
         29        DO_ICALL                                                 
   16    30        ECHO                                                     '%0A--%0A'
    8    31      > JMP                                                      ->2
         32    >   FE_FREE                                                  $3
   17    33      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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