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<?php $zero = '0'; var_dump(empty($zero)); $zerozero = (int) '00'; var_dump(empty($zerozero)); $zeropointzero = (int) '0.0'; var_dump(empty($zerozero));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/AIfji
function name:  (null)
number of ops:  18
compiled vars:  !0 = $zero, !1 = $zerozero, !2 = $zeropointzero
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '0'
    3     1        INIT_FCALL                                               'var_dump'
          2        ISSET_ISEMPTY_CV                                 ~4      !0
          3        SEND_VAL                                                 ~4
          4        DO_ICALL                                                 
    4     5        CAST                                          4  ~6      '00'
          6        ASSIGN                                                   !1, ~6
    5     7        INIT_FCALL                                               'var_dump'
          8        ISSET_ISEMPTY_CV                                 ~8      !1
          9        SEND_VAL                                                 ~8
         10        DO_ICALL                                                 
    6    11        CAST                                          4  ~10     '0.0'
         12        ASSIGN                                                   !2, ~10
    7    13        INIT_FCALL                                               'var_dump'
         14        ISSET_ISEMPTY_CV                                 ~12     !1
         15        SEND_VAL                                                 ~12
         16        DO_ICALL                                                 
         17      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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