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<?php $str = "4444,4444,5555,5555,4444,4444"; if(preg_match("/^\d{4}(,\d{4})*$/",$str)){ echo "it matched"; } else { echo "no match"; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 9
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/tsIKo
function name:  (null)
number of ops:  10
compiled vars:  !0 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '4444%2C4444%2C5555%2C5555%2C4444%2C4444'
    4     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%2F%5E%5Cd%7B4%7D%28%2C%5Cd%7B4%7D%29%2A%24%2F'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $2      
          5      > JMPZ                                                     $2, ->8
    5     6    >   ECHO                                                     'it+matched'
          7      > JMP                                                      ->9
    9     8    >   ECHO                                                     'no+match'
   10     9    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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