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<?php $localExpression = '^[a-z0-9_-]+(?:[a-z0-9._%+-]+)*'; $local = 'johnsnow'; $localExpression = '^[a-z0-9_-]+(?:[a-z0-9._%+-]+)*'; if (mb_eregi($localExpression, $local) === false) { echo 'invalid'; } else { echo 'valid'; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 9, Position 2 = 11
Branch analysis from position: 9
1 jumps found. (Code = 42) Position 1 = 12
Branch analysis from position: 12
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 11
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/0L2L1
function name:  (null)
number of ops:  13
compiled vars:  !0 = $localExpression, !1 = $local
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%5E%5Ba-z0-9_-%5D%2B%28%3F%3A%5Ba-z0-9._%25%2B-%5D%2B%29%2A'
    5     1        ASSIGN                                                   !1, 'johnsnow'
    6     2        ASSIGN                                                   !0, '%5E%5Ba-z0-9_-%5D%2B%28%3F%3A%5Ba-z0-9._%25%2B-%5D%2B%29%2A'
    7     3        INIT_FCALL                                               'mb_eregi'
          4        SEND_VAR                                                 !0
          5        SEND_VAR                                                 !1
          6        DO_ICALL                                         $5      
          7        TYPE_CHECK                                    4          $5
          8      > JMPZ                                                     ~6, ->11
    8     9    >   ECHO                                                     'invalid'
         10      > JMP                                                      ->12
   10    11    >   ECHO                                                     'valid'
   11    12    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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