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<?php $var = '0'; var_dump(strlen(null)); var_dump(strlen(false)); var_dump(strlen(0)); var_dump($var == '');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/gS70n
function name:  (null)
number of ops:  18
compiled vars:  !0 = $var
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '0'
    5     1        INIT_FCALL                                               'var_dump'
          2        STRLEN                                           ~2      null
          3        SEND_VAL                                                 ~2
          4        DO_ICALL                                                 
    6     5        INIT_FCALL                                               'var_dump'
          6        STRLEN                                           ~4      <false>
          7        SEND_VAL                                                 ~4
          8        DO_ICALL                                                 
    7     9        INIT_FCALL                                               'var_dump'
         10        STRLEN                                           ~6      0
         11        SEND_VAL                                                 ~6
         12        DO_ICALL                                                 
    8    13        INIT_FCALL                                               'var_dump'
         14        IS_EQUAL                                         ~8      !0, ''
         15        SEND_VAL                                                 ~8
         16        DO_ICALL                                                 
         17      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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