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<?php $a = [3]; foo(...$a ?? range(1,2)); $a = [null]; foo(...$a ?? range(1,2)); $a = null; foo(...$a ?? range(1,2)); function foo() { print_r(func_get_args()); }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/YTEL6
function name:  (null)
number of ops:  34
compiled vars:  !0 = $a
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
    4     1        INIT_FCALL_BY_NAME                                           'foo'
          2        COALESCE                                             ~2      !0
          3        INIT_FCALL                                                   'range'
          4        SEND_VAL                                                     1
          5        SEND_VAL                                                     2
          6        DO_ICALL                                             $3      
          7        QM_ASSIGN                                            ~2      $3
          8        SEND_UNPACK                                                  ~2
          9        CHECK_UNDEF_ARGS                                             
         10        DO_FCALL                                          1          
    6    11        ASSIGN                                                       !0, <array>
    7    12        INIT_FCALL_BY_NAME                                           'foo'
         13        COALESCE                                             ~6      !0
         14        INIT_FCALL                                                   'range'
         15        SEND_VAL                                                     1
         16        SEND_VAL                                                     2
         17        DO_ICALL                                             $7      
         18        QM_ASSIGN                                            ~6      $7
         19        SEND_UNPACK                                                  ~6
         20        CHECK_UNDEF_ARGS                                             
         21        DO_FCALL                                          1          
    9    22        ASSIGN                                                       !0, null
   10    23        INIT_FCALL_BY_NAME                                           'foo'
         24        COALESCE                                             ~10     !0
         25        INIT_FCALL                                                   'range'
         26        SEND_VAL                                                     1
         27        SEND_VAL                                                     2
         28        DO_ICALL                                             $11     
         29        QM_ASSIGN                                            ~10     $11
         30        SEND_UNPACK                                                  ~10
         31        CHECK_UNDEF_ARGS                                             
         32        DO_FCALL                                          1          
   15    33      > RETURN                                                       1

Function foo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/YTEL6
function name:  foo
number of ops:  5
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   14     0  E >   INIT_FCALL                                                   'print_r'
          1        FUNC_GET_ARGS                                        ~0      
          2        SEND_VAL                                                     ~0
          3        DO_ICALL                                                     
   15     4      > RETURN                                                       null

End of function foo

Generated using Vulcan Logic Dumper, using php 8.5.0


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