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<?php $k = (string)"0"; $a = array( 'name' => 'a', $k => 'null' ); $b = array( 'name' => 'b', 1 => 'zero' ); $c = array( 'name' => 'c', $k => 'zeronull' ); var_dump($a); var_dump($b); var_dump(array_merge($a, $b)); var_dump(array_merge($a, $c)); var_dump(array_merge($a, $b, $c)); var_dump($a + $b);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/R70dT
function name:  (null)
number of ops:  42
compiled vars:  !0 = $k, !1 = $a, !2 = $b, !3 = $c
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   CAST                                          6  ~4      '0'
          1        ASSIGN                                                   !0, ~4
    3     2        INIT_ARRAY                                       ~6      'a', 'name'
          3        ADD_ARRAY_ELEMENT                                ~6      'null', !0
          4        ASSIGN                                                   !1, ~6
    4     5        ASSIGN                                                   !2, <array>
    5     6        INIT_ARRAY                                       ~9      'c', 'name'
          7        ADD_ARRAY_ELEMENT                                ~9      'zeronull', !0
          8        ASSIGN                                                   !3, ~9
    7     9        INIT_FCALL                                               'var_dump'
         10        SEND_VAR                                                 !1
         11        DO_ICALL                                                 
    8    12        INIT_FCALL                                               'var_dump'
         13        SEND_VAR                                                 !2
         14        DO_ICALL                                                 
    9    15        INIT_FCALL                                               'var_dump'
         16        INIT_FCALL                                               'array_merge'
         17        SEND_VAR                                                 !1
         18        SEND_VAR                                                 !2
         19        DO_ICALL                                         $13     
         20        SEND_VAR                                                 $13
         21        DO_ICALL                                                 
   10    22        INIT_FCALL                                               'var_dump'
         23        INIT_FCALL                                               'array_merge'
         24        SEND_VAR                                                 !1
         25        SEND_VAR                                                 !3
         26        DO_ICALL                                         $15     
         27        SEND_VAR                                                 $15
         28        DO_ICALL                                                 
   11    29        INIT_FCALL                                               'var_dump'
         30        INIT_FCALL                                               'array_merge'
         31        SEND_VAR                                                 !1
         32        SEND_VAR                                                 !2
         33        SEND_VAR                                                 !3
         34        DO_ICALL                                         $17     
         35        SEND_VAR                                                 $17
         36        DO_ICALL                                                 
   12    37        INIT_FCALL                                               'var_dump'
         38        ADD                                              ~19     !1, !2
         39        SEND_VAL                                                 ~19
         40        DO_ICALL                                                 
         41      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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