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<?php $var=5; if (preg_match('/^[0-4]*$/', $var)) { echo $var . " is ok"; } else { echo $var . " is NOT ok";}
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 9
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 11
Branch analysis from position: 11
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/FVCcN
function name:  (null)
number of ops:  12
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 5
    5     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%2F%5E%5B0-4%5D%2A%24%2F'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $2      
          5      > JMPZ                                                     $2, ->9
    6     6    >   CONCAT                                           ~3      !0, '+is+ok'
          7        ECHO                                                     ~3
          8      > JMP                                                      ->11
    8     9    >   CONCAT                                           ~4      !0, '+is+NOT+ok'
         10        ECHO                                                     ~4
         11    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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