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<?php $data = [ 'existant_key'=>[] ]; foreach($data['non_existant_key'] as &$row) { } print_r($data);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 125) Position 1 = 3, Position 2 = 5
Branch analysis from position: 3
2 jumps found. (Code = 126) Position 1 = 4, Position 2 = 5
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 5
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 5
filename:       /in/UNIe4
function name:  (null)
number of ops:  10
compiled vars:  !0 = $data, !1 = $row
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
    7     1        FETCH_DIM_W                                          $3      !0, 'non_existant_key'
          2      > FE_RESET_RW                                          $4      $3, ->5
          3    > > FE_FETCH_RW                                                  $4, !1, ->5
          4    > > JMP                                                          ->3
          5    >   FE_FREE                                                      $4
   11     6        INIT_FCALL                                                   'print_r'
          7        SEND_VAR                                                     !0
          8        DO_ICALL                                                     
          9      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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