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<?php declare(strict_types=1); class CallableArray { private array $foo; public function doFoo(callable $foo): void { $this->foo = $foo; var_dump($this->foo); } } $c = new CallableArray(); $c->doFoo(['CallableArray', 'doFoo']);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/WJ8NW
function name:  (null)
number of ops:  7
compiled vars:  !0 = $c
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   12     0  E >   NEW                                              $1      'CallableArray'
          1        DO_FCALL                                      0          
          2        ASSIGN                                                   !0, $1
   13     3        INIT_METHOD_CALL                                         !0, 'doFoo'
          4        SEND_VAL_EX                                              <array>
          5        DO_FCALL                                      0          
          6      > RETURN                                                   1

Class CallableArray:
Function dofoo:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/WJ8NW
function name:  doFoo
number of ops:  8
compiled vars:  !0 = $foo
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   RECV                                             !0      
    7     1        ASSIGN_OBJ                                               'foo'
          2        OP_DATA                                                  !0
    8     3        INIT_FCALL                                               'var_dump'
          4        FETCH_OBJ_R                                      ~2      'foo'
          5        SEND_VAL                                                 ~2
          6        DO_ICALL                                                 
    9     7      > RETURN                                                   null

End of function dofoo

End of class CallableArray.

Generated using Vulcan Logic Dumper, using php 8.0.0


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