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<?php function foo() { } var_dump(empty(foo()));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/67j2m
function name:  (null)
number of ops:  7
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   6     0  E >   INIT_FCALL                                               'var_dump'
         1        INIT_FCALL                                               'foo'
         2        DO_FCALL                                      0  $0      
         3        BOOL_XOR                                         ~1      $0
         4        SEND_VAL                                                 ~1
         5        DO_ICALL                                                 
         6      > RETURN                                                   1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/67j2m
function name:  foo
number of ops:  1
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   4     0  E > > RETURN                                                   null

End of function foo

Generated using Vulcan Logic Dumper, using php 8.0.0


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