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<?php $ipString = 'ffff:heee:dddd:cccc:bbbb:aaaa:9999:8888'; $test = array(); preg_match_all("/(?U:[a-f0-9]+:?)+/", $ipString, $test); if(count($test) > 1 || count($test[0]) > 8){ echo "improper count\n"; echo 'false'; }else{ echo "proper count\n"; if(implode(':', $test[0]) !== $ipString){ echo "imploded matches doesn't match original string\n"; echo 'false'; } } var_dump($test); var_dump($ipString); echo implode(':', $test[0]); echo true; ?>
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 47) Position 1 = 10, Position 2 = 14
Branch analysis from position: 10
2 jumps found. (Code = 43) Position 1 = 15, Position 2 = 18
Branch analysis from position: 15
1 jumps found. (Code = 42) Position 1 = 28
Branch analysis from position: 28
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 18
2 jumps found. (Code = 43) Position 1 = 26, Position 2 = 28
Branch analysis from position: 26
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 28
Branch analysis from position: 14
filename:       /in/UcoIl
function name:  (null)
number of ops:  42
compiled vars:  !0 = $ipString, !1 = $test
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'ffff%3Aheee%3Adddd%3Acccc%3Abbbb%3Aaaaa%3A9999%3A8888'
    4     1        ASSIGN                                                   !1, <array>
    5     2        INIT_FCALL                                               'preg_match_all'
          3        SEND_VAL                                                 '%2F%28%3FU%3A%5Ba-f0-9%5D%2B%3A%3F%29%2B%2F'
          4        SEND_VAR                                                 !0
          5        SEND_REF                                                 !1
          6        DO_ICALL                                                 
    6     7        COUNT                                            ~5      !1
          8        IS_SMALLER                                       ~6      1, ~5
          9      > JMPNZ_EX                                         ~6      ~6, ->14
         10    >   FETCH_DIM_R                                      ~7      !1, 0
         11        COUNT                                            ~8      ~7
         12        IS_SMALLER                                       ~9      8, ~8
         13        BOOL                                             ~6      ~9
         14    > > JMPZ                                                     ~6, ->18
    7    15    >   ECHO                                                     'improper+count%0A'
    8    16        ECHO                                                     'false'
         17      > JMP                                                      ->28
   10    18    >   ECHO                                                     'proper+count%0A'
   11    19        INIT_FCALL                                               'implode'
         20        SEND_VAL                                                 '%3A'
         21        FETCH_DIM_R                                      ~10     !1, 0
         22        SEND_VAL                                                 ~10
         23        DO_ICALL                                         $11     
         24        IS_NOT_IDENTICAL                                         !0, $11
         25      > JMPZ                                                     ~12, ->28
   12    26    >   ECHO                                                     'imploded+matches+doesn%27t+match+original+string%0A'
   13    27        ECHO                                                     'false'
   16    28    >   INIT_FCALL                                               'var_dump'
         29        SEND_VAR                                                 !1
         30        DO_ICALL                                                 
   17    31        INIT_FCALL                                               'var_dump'
         32        SEND_VAR                                                 !0
         33        DO_ICALL                                                 
   18    34        INIT_FCALL                                               'implode'
         35        SEND_VAL                                                 '%3A'
         36        FETCH_DIM_R                                      ~15     !1, 0
         37        SEND_VAL                                                 ~15
         38        DO_ICALL                                         $16     
         39        ECHO                                                     $16
   19    40        ECHO                                                     <true>
   21    41      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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