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<?php // Undefined index ['does_not_exist' => $a, 'b' => $b] = ['a' => 1, 'b' => 2]; var_dump($a, $b); // Skipping values [,,$c] = [1, 2, 3]; var_dump($c);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ZM3p9
function name:  (null)
number of ops:  14
compiled vars:  !0 = $a, !1 = $b, !2 = $c
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   FETCH_LIST_R                                     $3      <array>, 'does_not_exist'
          1        ASSIGN                                                   !0, $3
          2        FETCH_LIST_R                                     $5      <array>, 'b'
          3        ASSIGN                                                   !1, $5
    5     4        INIT_FCALL                                               'var_dump'
          5        SEND_VAR                                                 !0
          6        SEND_VAR                                                 !1
          7        DO_ICALL                                                 
    8     8        FETCH_LIST_R                                     $8      <array>, 2
          9        ASSIGN                                                   !2, $8
    9    10        INIT_FCALL                                               'var_dump'
         11        SEND_VAR                                                 !2
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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