3v4l.org

run code in 300+ PHP versions simultaneously
<?php class One {} class Two {} class Three {} function check(One|Two|Three ...$numbers): void { var_dump($numbers); } check(...[new One, new Two]); check(...[new One, new StdClass]);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/aIYLn
function name:  (null)
number of ops:  21
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   INIT_FCALL                                               'check'
          1        NEW                                              $0      'One'
          2        DO_FCALL                                      0          
          3        INIT_ARRAY                                       ~2      $0
          4        NEW                                              $3      'Two'
          5        DO_FCALL                                      0          
          6        ADD_ARRAY_ELEMENT                                ~2      $3
          7        SEND_UNPACK                                              ~2
          8        CHECK_UNDEF_ARGS                                         
          9        DO_FCALL                                      1          
    9    10        INIT_FCALL                                               'check'
         11        NEW                                              $6      'One'
         12        DO_FCALL                                      0          
         13        INIT_ARRAY                                       ~8      $6
         14        NEW                                              $9      'StdClass'
         15        DO_FCALL                                      0          
         16        ADD_ARRAY_ELEMENT                                ~8      $9
         17        SEND_UNPACK                                              ~8
         18        CHECK_UNDEF_ARGS                                         
         19        DO_FCALL                                      1          
         20      > RETURN                                                   1

Function check:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/aIYLn
function name:  check
number of ops:  5
compiled vars:  !0 = $numbers
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    5     0  E >   RECV_VARIADIC                                    !0      
    6     1        INIT_FCALL                                               'var_dump'
          2        SEND_VAR                                                 !0
          3        DO_ICALL                                                 
    7     4      > RETURN                                                   null

End of function check

Class One: [no user functions]
Class Two: [no user functions]
Class Three: [no user functions]

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
137.7 ms | 1000 KiB | 16 Q