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<?php $bool = false; echo 'is ', var_export($bool, true), 'empty? ', var_export(empty($bool)), "\n"; $str = (string)$bool; echo 'is ', var_export($str, true), 'empty? ', var_export(empty($str)), "\n"; $bool = (bool)$string; echo 'is ', var_export($bool, true), 'empty? ', var_export(empty($bool)), "\n";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/KVO3s
function name:  (null)
number of ops:  45
compiled vars:  !0 = $bool, !1 = $str, !2 = $string
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <false>
    3     1        ECHO                                                     'is+'
          2        INIT_FCALL                                               'var_export'
          3        SEND_VAR                                                 !0
          4        SEND_VAL                                                 <true>
          5        DO_ICALL                                         $4      
          6        ECHO                                                     $4
          7        ECHO                                                     'empty%3F+'
          8        INIT_FCALL                                               'var_export'
          9        ISSET_ISEMPTY_CV                                 ~5      !0
         10        SEND_VAL                                                 ~5
         11        DO_ICALL                                         $6      
         12        ECHO                                                     $6
         13        ECHO                                                     '%0A'
    5    14        CAST                                          6  ~7      !0
         15        ASSIGN                                                   !1, ~7
    6    16        ECHO                                                     'is+'
         17        INIT_FCALL                                               'var_export'
         18        SEND_VAR                                                 !1
         19        SEND_VAL                                                 <true>
         20        DO_ICALL                                         $9      
         21        ECHO                                                     $9
         22        ECHO                                                     'empty%3F+'
         23        INIT_FCALL                                               'var_export'
         24        ISSET_ISEMPTY_CV                                 ~10     !1
         25        SEND_VAL                                                 ~10
         26        DO_ICALL                                         $11     
         27        ECHO                                                     $11
         28        ECHO                                                     '%0A'
    8    29        BOOL                                             ~12     !2
         30        ASSIGN                                                   !0, ~12
    9    31        ECHO                                                     'is+'
         32        INIT_FCALL                                               'var_export'
         33        SEND_VAR                                                 !0
         34        SEND_VAL                                                 <true>
         35        DO_ICALL                                         $14     
         36        ECHO                                                     $14
         37        ECHO                                                     'empty%3F+'
         38        INIT_FCALL                                               'var_export'
         39        ISSET_ISEMPTY_CV                                 ~15     !0
         40        SEND_VAL                                                 ~15
         41        DO_ICALL                                         $16     
         42        ECHO                                                     $16
         43        ECHO                                                     '%0A'
         44      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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