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<?php function doThis() { echo 'asdf'; } set_exception_handler('doThis'); var_dump(set_exception_handler(null));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/LvV3h
function name:  (null)
number of ops:  10
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   INIT_FCALL                                               'set_exception_handler'
          1        SEND_VAL                                                 'doThis'
          2        DO_ICALL                                                 
    9     3        INIT_FCALL                                               'var_dump'
          4        INIT_FCALL                                               'set_exception_handler'
          5        SEND_VAL                                                 null
          6        DO_ICALL                                         $1      
          7        SEND_VAR                                                 $1
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Function dothis:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/LvV3h
function name:  doThis
number of ops:  2
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    4     0  E >   ECHO                                                     'asdf'
    5     1      > RETURN                                                   null

End of function dothis

Generated using Vulcan Logic Dumper, using php 8.0.0


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