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<?php $numStr = "100"; echo (bool) $numStr; echo "\n"; echo !!$num;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/XQXhI
function name:  (null)
number of ops:  8
compiled vars:  !0 = $numStr, !1 = $num
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '100'
    3     1        BOOL                                             ~3      !0
          2        ECHO                                                     ~3
    4     3        ECHO                                                     '%0A'
    5     4        BOOL_NOT                                         ~4      !1
          5        BOOL_NOT                                         ~5      ~4
          6        ECHO                                                     ~5
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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