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<?php class foo { function returnArray(){ return [0,1]; } } $obj = new foo(); var_dump(isset($obj->returnArray()[1]));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ie4Fd
function name:  (null)
number of ops:  10
compiled vars:  !0 = $obj
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   NEW                                              $1      'foo'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
   11     3        INIT_FCALL                                               'var_dump'
          4        INIT_METHOD_CALL                                         !0, 'returnArray'
          5        DO_FCALL                                      0  $4      
          6        ISSET_ISEMPTY_DIM_OBJ                         0  ~5      $4, 1
          7        SEND_VAL                                                 ~5
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Class foo:
Function returnarray:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ie4Fd
function name:  returnArray
number of ops:  2
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E > > RETURN                                                   <array>
    5     1*     > RETURN                                                   null

End of function returnarray

End of class foo.

Generated using Vulcan Logic Dumper, using php 8.0.0


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