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<?php class test { function __toString() { return 'test'; } } var_dump([new test => 'test2']);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6NvV9
function name:  (null)
number of ops:  8
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   DECLARE_CLASS                                            'test'
    9     1        INIT_FCALL                                               'var_dump'
          2        NEW                                              $0      'test'
          3        DO_FCALL                                      0          
          4        INIT_ARRAY                                       ~2      'test2', $0
          5        SEND_VAL                                                 ~2
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Class test:
Function __tostring:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/6NvV9
function name:  __toString
number of ops:  3
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E > > RETURN                                                   'test'
    6     1*       VERIFY_RETURN_TYPE                                       
          2*     > RETURN                                                   null

End of function __tostring

End of class test.

Generated using Vulcan Logic Dumper, using php 8.0.0


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