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<?php $bool = false; $int = 0; echo 'is ', var_export($bool, true), ' == ', var_export($int, true), '? ', var_export($bool == $int), "\n"; $str = (string)$bool; echo 'is ', var_export($str, true), ' empty? ', var_export(empty($str)), "\n"; $int = (int)$str; echo 'is ', var_export($int, true), ' empty? ', var_export(empty($int)), "\n";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/L65Sf
function name:  (null)
number of ops:  52
compiled vars:  !0 = $bool, !1 = $int, !2 = $str
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <false>
    3     1        ASSIGN                                                   !1, 0
    4     2        ECHO                                                     'is+'
          3        INIT_FCALL                                               'var_export'
          4        SEND_VAR                                                 !0
          5        SEND_VAL                                                 <true>
          6        DO_ICALL                                         $5      
          7        ECHO                                                     $5
          8        ECHO                                                     '+%3D%3D+'
          9        INIT_FCALL                                               'var_export'
         10        SEND_VAR                                                 !1
         11        SEND_VAL                                                 <true>
         12        DO_ICALL                                         $6      
         13        ECHO                                                     $6
         14        ECHO                                                     '%3F+'
         15        INIT_FCALL                                               'var_export'
         16        IS_EQUAL                                         ~7      !0, !1
         17        SEND_VAL                                                 ~7
         18        DO_ICALL                                         $8      
         19        ECHO                                                     $8
         20        ECHO                                                     '%0A'
    6    21        CAST                                          6  ~9      !0
         22        ASSIGN                                                   !2, ~9
    7    23        ECHO                                                     'is+'
         24        INIT_FCALL                                               'var_export'
         25        SEND_VAR                                                 !2
         26        SEND_VAL                                                 <true>
         27        DO_ICALL                                         $11     
         28        ECHO                                                     $11
         29        ECHO                                                     '+empty%3F+'
         30        INIT_FCALL                                               'var_export'
         31        ISSET_ISEMPTY_CV                                 ~12     !2
         32        SEND_VAL                                                 ~12
         33        DO_ICALL                                         $13     
         34        ECHO                                                     $13
         35        ECHO                                                     '%0A'
    9    36        CAST                                          4  ~14     !2
         37        ASSIGN                                                   !1, ~14
   10    38        ECHO                                                     'is+'
         39        INIT_FCALL                                               'var_export'
         40        SEND_VAR                                                 !1
         41        SEND_VAL                                                 <true>
         42        DO_ICALL                                         $16     
         43        ECHO                                                     $16
         44        ECHO                                                     '+empty%3F+'
         45        INIT_FCALL                                               'var_export'
         46        ISSET_ISEMPTY_CV                                 ~17     !1
         47        SEND_VAL                                                 ~17
         48        DO_ICALL                                         $18     
         49        ECHO                                                     $18
         50        ECHO                                                     '%0A'
         51      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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