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<?php $array = [ "keyA" => 1, "keyB" => 2, "keyC" => 3 ]; echo "noMatch: " , (int)!!array_intersect_key($array, array_flip(['keyD', 'keyF'])) , "\n"; echo "oneMatch: " , !!array_intersect_key($array, array_flip( ['keyB', 'keyD'])) , "\n"; echo "twoMatches: " , !!array_intersect_key($array, array_flip(['keyA', 'keyC'])) , "\n";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Hvn9S
function name:  (null)
number of ops:  39
compiled vars:  !0 = $array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    8     1        ECHO                                                     'noMatch%3A+'
          2        INIT_FCALL                                               'array_intersect_key'
          3        SEND_VAR                                                 !0
          4        INIT_FCALL                                               'array_flip'
          5        SEND_VAL                                                 <array>
          6        DO_ICALL                                         $2      
          7        SEND_VAR                                                 $2
          8        DO_ICALL                                         $3      
          9        BOOL_NOT                                         ~4      $3
         10        BOOL_NOT                                         ~5      ~4
         11        CAST                                          4  ~6      ~5
         12        ECHO                                                     ~6
         13        ECHO                                                     '%0A'
    9    14        ECHO                                                     'oneMatch%3A+'
         15        INIT_FCALL                                               'array_intersect_key'
         16        SEND_VAR                                                 !0
         17        INIT_FCALL                                               'array_flip'
         18        SEND_VAL                                                 <array>
         19        DO_ICALL                                         $7      
         20        SEND_VAR                                                 $7
         21        DO_ICALL                                         $8      
         22        BOOL_NOT                                         ~9      $8
         23        BOOL_NOT                                         ~10     ~9
         24        ECHO                                                     ~10
         25        ECHO                                                     '%0A'
   10    26        ECHO                                                     'twoMatches%3A+'
         27        INIT_FCALL                                               'array_intersect_key'
         28        SEND_VAR                                                 !0
         29        INIT_FCALL                                               'array_flip'
         30        SEND_VAL                                                 <array>
         31        DO_ICALL                                         $11     
         32        SEND_VAR                                                 $11
         33        DO_ICALL                                         $12     
         34        BOOL_NOT                                         ~13     $12
         35        BOOL_NOT                                         ~14     ~13
         36        ECHO                                                     ~14
         37        ECHO                                                     '%0A'
         38      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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