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<?php f((double)5); function f(double $d){ var_dump($d); }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/4dGn7
function name:  (null)
number of ops:  6
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   2     0  E >   INIT_FCALL_BY_NAME                                       'f'
         1        CAST                                          5  ~0      5
         2        SEND_VAL_EX                                              ~0
         3        DO_FCALL                                      0          
   3     4        NOP                                                      
   5     5      > RETURN                                                   1

Function f:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/4dGn7
function name:  f
number of ops:  5
compiled vars:  !0 = $d
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   RECV                                             !0      
   4     1        INIT_FCALL                                               'var_dump'
         2        SEND_VAR                                                 !0
         3        DO_ICALL                                                 
   5     4      > RETURN                                                   null

End of function f

Generated using Vulcan Logic Dumper, using php 7.3.0