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<?php function foo(string $foo = null) {} foo('foo'); foo(null); foo(); foo(1);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7e1bV
function name:  (null)
number of ops:  12
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   INIT_FCALL                                               'foo'
          1        SEND_VAL                                                 'foo'
          2        DO_FCALL                                      0          
    6     3        INIT_FCALL                                               'foo'
          4        SEND_VAL                                                 null
          5        DO_FCALL                                      0          
    7     6        INIT_FCALL                                               'foo'
          7        DO_FCALL                                      0          
    8     8        INIT_FCALL                                               'foo'
          9        SEND_VAL                                                 1
         10        DO_FCALL                                      0          
         11      > RETURN                                                   1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7e1bV
function name:  foo
number of ops:  2
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV_INIT                                        !0      null
          1      > RETURN                                                   null

End of function foo

Generated using Vulcan Logic Dumper, using php 8.0.0


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